{"id":7581,"date":"2025-05-24T18:31:36","date_gmt":"2025-05-24T09:31:36","guid":{"rendered":"https:\/\/www.aphex-group.com\/blog\/?p=7581"},"modified":"2025-06-10T22:08:38","modified_gmt":"2025-06-10T13:08:38","slug":"%e3%80%90%e4%b8%ad2%e3%81%ae%e6%95%b0%e5%ad%a6%e3%80%91%e9%80%a3%e7%ab%8b%e6%96%b9%e7%a8%8b%e5%bc%8f%e3%81%a8%e4%b8%80%e6%ac%a1%e9%96%a2%e6%95%b0%e3%81%ae%e5%9f%ba%e7%a4%8e%e3%81%8b%e3%82%89%e5%bf%9c","status":"publish","type":"post","link":"https:\/\/www.aphex-group.com\/blog\/433\/","title":{"rendered":"\u3010\u4e2d2\u306e\u6570\u5b66\u3011\u9023\u7acb\u65b9\u7a0b\u5f0f\u3068\u4e00\u6b21\u95a2\u6570\u306e\u57fa\u790e\u304b\u3089\u5fdc\u7528\u307e\u3067\u3092\u5fb9\u5e95\u89e3\u8aac"},"content":{"rendered":"

a = a = \u5909\u5316\u306e\u5272\u5408 = y\u306e\u5897\u52a0\u91cf x\u00f74 \u00f7 \uff12=\uff12<\/p>\n

\u9023\u7acb\u65b9\u7a0b\u5f0f\u3068\u4e00\u6b21\u95a2\u6570\u306f\u3001\u4e2d\u5b662\u5e74\u751f\u3067\u5b66\u3076\u6570\u5b66\u306e\u4e2d\u3067\u3082\u7279\u306b\u5927\u5207\u306a\u5358\u5143\u3067\u3059\u3002\u3053\u306e2\u3064\u3092\u3057\u3063\u304b\u308a\u7406\u89e3\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u4e2d1\u3067\u5b66\u3093\u3060\u300c\u6b63\u8ca0\u306e\u6570\u300d\u300c\u6587\u5b57\u5f0f\u300d\u300c\u65b9\u7a0b\u5f0f\u300d\u306a\u3069\u306e\u57fa\u790e\u304c\u571f\u53f0\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n

\u3082\u3057\u4e2d1\u306e\u3068\u304d\u306f\u4f55\u3068\u306a\u304f\u89e3\u3051\u3066\u3044\u305f\u306e\u306b\u3001\u4e2d2\u306b\u5165\u3063\u3066\u304b\u3089\u6025\u306b\u70b9\u6570\u304c\u4e0b\u304c\u3063\u305f\u2026\u3068\u3044\u3046\u5834\u5408\u306f\u3001\u3053\u306e\u571f\u53f0\u304c\u5c11\u3057\u30b0\u30e9\u3064\u3044\u3066\u3044\u308b\u306e\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u305d\u3093\u306a\u3068\u304d\u306f\u3001\u4e00\u5ea6\u4e2d1\u306e\u57fa\u672c\u7684\u306a\u5185\u5bb9\u3092\u632f\u308a\u8fd4\u3063\u3066\u307f\u308b\u3068\u3088\u3044\u3067\u3057\u3087\u3046\u3002\u6570\u5b66\u306f\u300c\u7a4d\u307f\u91cd\u306d\u306e\u6559\u79d1\u300d\u3068\u3088\u304f\u8a00\u308f\u308c\u307e\u3059\u3002\u57fa\u790e\u3092\u3057\u3063\u304b\u308a\u7406\u89e3\u3057\u3066\u304a\u304f\u3053\u3068\u3067\u3001\u65b0\u3057\u3044\u5185\u5bb9\u3082\u30b9\u30e0\u30fc\u30ba\u306b\u5438\u53ce\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n

\u307e\u305f\u3001\u9023\u7acb\u65b9\u7a0b\u5f0f\u3084\u4e00\u6b21\u95a2\u6570\u3067\u306f\u3001\u6587\u7ae0\u3067\u66f8\u304b\u308c\u305f\u5185\u5bb9\u3092\u5f0f\u306b\u3059\u308b\u529b\u3082\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\u3002\u571f\u53f0\u304c\u3057\u3063\u304b\u308a\u3057\u3066\u3044\u306a\u3044\u3068\u3001\u305d\u3046\u3057\u305f\u6587\u7ae0\u984c\u306b\u4e00\u6bb5\u3068\u96e3\u3057\u3055\u3092\u611f\u3058\u308b\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u4e2d2\u6570\u5b66\u3067\u7279\u306b\u5927\u4e8b\u306a\u300c\u9023\u7acb\u65b9\u7a0b\u5f0f\u300d\u3068\u300c\u4e00\u6b21\u95a2\u6570\u300d\u306b\u3064\u3044\u3066\u3001\u57fa\u672c\u7684\u306a\u554f\u984c\u306e\u89e3\u304d\u65b9\u304b\u3089\u3001\u6587\u7ae0\u984c\u306a\u3069\u306e\u5fdc\u7528\u554f\u984c\u307e\u3067\u3001\u6bb5\u968e\u7684\u306b\u89e3\u8aac\u3057\u3066\u3044\u304d\u307e\u3059\u3002\u3064\u307e\u305a\u304d\u3092\u611f\u3058\u3066\u3044\u308b\u4eba\u3082\u3001\u305c\u3072\u3053\u3053\u3067\u4e00\u7dd2\u306b\u6574\u7406\u3057\u3066\u3001\u5c11\u3057\u305a\u3064\u300c\u308f\u304b\u308b\uff01\u300d\u3068\u3044\u3046\u611f\u899a\u3092\u3064\u304b\u3093\u3067\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n

\u9023\u7acb\u65b9\u7a0b\u5f0f<\/h2>\n

\u9023\u7acb\u65b9\u7a0b\u5f0f\u3063\u3066\u4f55\uff1f<\/h3>\n

\u4e2d1\u306e\u6570\u5b66\u3067\u306f\u300c\u65b9\u7a0b\u5f0f\uff08\u4e00\u5143\u4e00\u6b21\u65b9\u7a0b\u5f0f\uff09\u300d\u3092\u5b66\u3073\u307e\u3057\u305f\u3002\u305d\u306e\u4e2d\u3067\u300c\u79fb\u9805\u300d\u306a\u3069\u306e\u6587\u5b57\u5f0f\u306e\u8a08\u7b97\u306e\u4ed5\u65b9\u3092\u5b66\u3073\u307e\u3057\u305f\u304c\u3001\u899a\u3048\u3066\u3044\u307e\u3059\u3067\u3057\u3087\u3046\u304b\u3002\u3053\u308c\u304c\u66d6\u6627\u306a\u5834\u5408\u306f\u3001\u4e2d2\u306e\u6570\u5b66\u3067\u5b66\u3076\u300c\u9023\u7acb\u65b9\u7a0b\u5f0f\uff08\u4e8c\u5143\u4e00\u6b21\u65b9\u7a0b\u5f0f\uff09\u300d\u306f\u6b6f\u304c\u7acb\u3061\u307e\u305b\u3093\u3002<\/p>\n

\u4e2d1\u306e\u6570\u5b66\u3067\u306f\u3001\u300c\u4e00\u5143\u4e00\u6b21\u65b9\u7a0b\u5f0f\u300d\u3068\u3044\u3046\u3001x\u306a\u3069\u306e\u6587\u5b57\u304c1\u3064\u3060\u3051\u51fa\u3066\u304f\u308b\u65b9\u7a0b\u5f0f\u3092\u5b66\u3073\u307e\u3057\u305f\u3002\u305d\u306e\u4e2d\u3067\u300c\u79fb\u9805\u300d\u3084\u3001\u6587\u5b57\u5f0f\u306e\u8a08\u7b97\u306e\u57fa\u672c\u3082\u5b66\u3073\u307e\u3057\u305f\u304c\u3001\u899a\u3048\u3066\u3044\u307e\u3059\u304b\uff1f<\/p>\n

\u3053\u308c\u304c\u3042\u3084\u3075\u3084\u306a\u307e\u307e\u3060\u3068\u3001\u4e2d2\u3067\u51fa\u3066\u304f\u308b\u300c\u9023\u7acb\u65b9\u7a0b\u5f0f\uff08\u4e8c\u5143\u4e00\u6b21\u65b9\u7a0b\u5f0f\uff09\u300d\u3092\u89e3\u304f\u306e\u306f\u306a\u304b\u306a\u304b\u96e3\u3057\u304f\u306a\u3063\u3066\u3057\u307e\u3044\u307e\u3059\u3002<\/p>\n

\u305d\u3053\u3067\u307e\u305a\u306f\u3001\u4e2d1\u3067\u7fd2\u3063\u305f\u4e00\u5143\u4e00\u6b21\u65b9\u7a0b\u5f0f\u306e\u89e3\u304d\u65b9\u3092\u3001\u8efd\u304f\u304a\u3055\u3089\u3044\u3057\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002
\n\u305f\u3068\u3048\u3070\u3001\u6b21\u306e\u3088\u3046\u306a\u65b9\u7a0b\u5f0f\u3067\u3059\u3002
\n$$3\ud835\udc65+2=8$$
\n\u3053\u306e\u5f0f\u3092\u3069\u3046\u3084\u3063\u3066\u89e3\u3044\u3066\u3044\u304f\u304b\u3001\u9806\u3092\u8ffd\u3063\u3066\u898b\u3066\u3044\u304d\u307e\u3059\u306d\u3002
\n$3\ud835\udc65+2=8$
\n$3\ud835\udc65=8-2$ \uff08\u5de6\u8fba\u306e+2\u3092\u53f3\u8fba\u306b\u79fb\u9805\u3057-2\u306b\u3059\u308b\uff09
\n$3\ud835\udc65=6$
\n$\ud835\udc65=2$<\/p>\n

\u3053\u306e\u3088\u3046\u306b\u3001\u4e2d1\u306e\u65b9\u7a0b\u5f0f\u3067\u6c42\u3081\u308b\u306e\u306fx\u3060\u3051\u3067\u3057\u305f\u3002
\n\u4e2d2\u3067\u5b66\u3076\u300c\u9023\u7acb\u65b9\u7a0b\u5f0f\u300d\u306f\u3001\u6c42\u3081\u308b\u5024\u304cx\u3068y\u306e2\u3064\u306b\u306a\u308a\u3001\u6b21\u306e\u3088\u3046\u306a\u5f62\u3067\u8868\u3055\u308c\u307e\u3059\u3002
\n$$\\begin{eqnarray}
\n\\left\\{
\n\\begin{array}{l}
\n2\ud835\udc65+\ud835\udc66=3 \\\\
\n3\ud835\udc65\u22122\ud835\udc66=-2
\n\\end{array}
\n\\right.
\n\\end{eqnarray}$$<\/p>\n

\u9023\u7acb\u65b9\u7a0b\u5f0f\u306f\u3001\u8a08\u7b97\u306e\u624b\u9806\u304c\u5897\u3048\u308b\u306e\u3067\u3001\u6700\u521d\u306f\u3061\u3087\u3063\u3068\u96e3\u3057\u304f\u611f\u3058\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u6587\u7ae0\u984c\u3082\u8907\u96d1\u306b\u306a\u3063\u3066\u304d\u307e\u3059\u3057\u3001\u3057\u3063\u304b\u308a\u3068\u7406\u89e3\u3057\u3066\u3044\u306a\u3044\u3068\u3001\u9014\u4e2d\u3067\u6df7\u4e71\u3057\u3066\u3057\u307e\u3046\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u3002\u3067\u3082\u3001\u3053\u3053\u3092\u3057\u3063\u304b\u308a\u30de\u30b9\u30bf\u30fc\u3059\u308c\u3070\u3001\u5b9a\u671f\u30c6\u30b9\u30c8\u306f\u3082\u3061\u308d\u3093\u3001\u9ad8\u6821\u5165\u8a66\u3067\u3082\u5927\u304d\u306a\u5f97\u70b9\u6e90\u306b\u306a\u308a\u307e\u3059\u3002\u78ba\u5b9f\u306b\u70b9\u6570\u30a2\u30c3\u30d7\u306b\u3064\u306a\u304c\u308b\u5358\u5143\u306a\u306e\u3067\u3001\u5c11\u3057\u305a\u3064\u7df4\u7fd2\u3057\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n

\u9023\u7acb\u65b9\u7a0b\u5f0f\u306e\u89e3\u304d\u65b9\u306b\u306f\u3001\u300c\u52a0\u6e1b\u6cd5\u300d\u3068\u300c\u4ee3\u5165\u6cd5\u300d\u306e2\u3064\u306e\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059\u3002\u3069\u3061\u3089\u306e\u65b9\u6cd5\u3067\u3082\u7b54\u3048\u306f\u51fa\u305b\u307e\u3059\u304c\u3001\u5f0f\u306e\u5f62\u306b\u3088\u3063\u3066\u306f\u300c\u3053\u3063\u3061\u306e\u65b9\u304c\u89e3\u304d\u3084\u3059\u3044\u306a\u300d\u3068\u611f\u3058\u308b\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u3002\u6163\u308c\u3066\u304f\u308b\u3068\u3001\u3069\u3061\u3089\u306e\u65b9\u6cd5\u3092\u4f7f\u3046\u304b\u81ea\u5206\u3067\u5224\u65ad\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3088\u3002<\/p>\n

\u305f\u3060\u3057\u3001\u5b9a\u671f\u30c6\u30b9\u30c8\u3067\u306f\u300c\u52a0\u6e1b\u6cd5\u3067\u89e3\u304d\u306a\u3055\u3044\u300d\u3084\u300c\u4ee3\u5165\u6cd5\u3092\u4f7f\u3063\u3066\u89e3\u304d\u306a\u3055\u3044\u300d\u3068\u3044\u3063\u305f\u6307\u5b9a\u304c\u3042\u308b\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u3002\u3069\u3061\u3089\u306e\u65b9\u6cd5\u306b\u3082\u6163\u308c\u3066\u304a\u304f\u3068\u5b89\u5fc3\u3067\u3059\u3002<\/p>\n

\u9023\u7acb\u65b9\u7a0b\u5f0f\u306e\u89e3\u304d\u65b9<\/h3>\n

(1)\u2009\u52a0\u6e1b\u6cd5<\/h4>\n

\u52a0\u6e1b\u6cd5\u3068\u306f\u30012\u3064\u306e\u65b9\u7a0b\u5f0f\u3092\u8db3\u308a\u305f\u308a\u5f15\u3044\u305f\u308a\u3057\u3066\u3001$y$\u307e\u305f\u306f$x$\u306e\u3069\u3061\u3089\u304b\u3092\u6d88\u53bb\u3057\u3066\u89e3\u304f\u65b9\u6cd5\u3067\u3059\u3002<\/p>\n

\u3010\u4f8b\u984c1\u3011<\/strong><\/p>\n

2\u3064\u306e\u5f0f\u3092\u8db3\u308a\u305f\u308a\u5f15\u3044\u305f\u308a\u3059\u308c\u3070\u3001$x$\u304b$y$\u306e\u3069\u3061\u3089\u304b\u4e00\u3064\u306b\u306a\u308b\u5834\u5408<\/p>\n

$$\\begin{eqnarray}
\n\\left\\{
\n\\begin{array}{l}
\n2\ud835\udc65+\ud835\udc66=3\u30fb\u30fb\u30fb[1] \\\\
\n3\ud835\udc65\u2212\ud835\udc66=7\u30fb\u30fb\u30fb[2]
\n\\end{array}
\n\\right.
\n\\end{eqnarray}$$<\/p>\n

\u3010\u89e3\u304d\u65b9\u3011<\/strong><\/p>\n

\u30b9\u30c6\u30c3\u30d7\u2460
\n2\u3064\u306e\u5f0f\u306e\u5de6\u8fba\u540c\u58eb\u3001\u53f3\u8fba\u540c\u58eb\u3092\u8db3\u3057\u3066$y$\u3092\u6d88\u53bb\u3057\u307e\u3059\u3002<\/p>\n

$2x+y=3$
\n$+)3x-y=7$
\n$5x = 10$
\n$x = 2$<\/p>\n

\u3088\u3063\u3066\u3001\u307e\u305a\u306f$x=2$\u304c\u6c42\u3081\u3089\u308c\u307e\u3057\u305f\u3002<\/p>\n

\u30b9\u30c6\u30c3\u30d7\u2461
\n\u6c42\u3081\u305f$x$\u3092\u5143\u306e\u5f0f\u306b\u4ee3\u5165\u3057y\u3092\u6c42\u3081\u307e\u3059\u3002<\/p>\n

[1]\u304b[2]\u306b$x=2$\u3092\u4ee3\u5165\u3057\u3001$y$\u3092\u6c42\u3081\u3066\u3044\u304d\u307e\u3059\u3002
\n\u4fc2\u6570\u306e\u5c0f\u3055\u3044\u65b9\u304c\u8a08\u7b97\u304c\u697d\u3067\u3059\u306e\u3067\u3001\u3053\u3053\u3067\u306f[1]\u306b$x=2$\u3092\u4ee3\u5165\u3057\u307e\u3059\u3002<\/p>\n

$2×2+y=3$
\n$4+y=3$
\n$y=3-4\uff08\u79fb\u9805\uff09$
\n$y=-1$<\/p>\n

\u3053\u308c\u3067\u3001$x$\u3068$y$\u306e2\u3064\u304c\u6c42\u307e\u308a\u307e\u3057\u305f\u3002
\n\u89e3\u7b54\u6b04\u306b\u306f\u300c$x=2 , y=-1$\u300d\u3068\u66f8\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n

\u3010\u4f8b\u984c2\u3011<\/strong><\/p>\n

2\u3064\u306e\u5f0f\u306e\u305d\u308c\u305e\u308c\u306ex\u304by\u306e\u4fc2\u6570\u306e\u7d76\u5bfe\u5024\u304c\u7570\u306a\u308b\u5834\u5408
\n$$\\begin{eqnarray}
\n\\left\\{
\n\\begin{array}{l}
\n2x-y=4\u3000 \u30fb\u30fb\u30fb[1]\\\\
\n5x+3y=-1\u3000 \u30fb\u30fb\u30fb[2]
\n\\end{array}
\n\\right.
\n\\end{eqnarray}$$<\/p>\n

\u3010\u89e3\u304d\u65b9\u3011<\/strong><\/p>\n

\u5358\u7d14\u306b\u30012\u3064\u306e\u5f0f\u3092\u8db3\u308a\u305f\u308a\u5f15\u3044\u305f\u308a\u3057\u3066\u3082\u3001x\u304by\u306e\u3069\u3061\u3089\u304b\u4e00\u3064\u306b\u306f\u306a\u308a\u307e\u305b\u3093\u3002
\n\u3053\u306e\u5834\u5408\u306f\u3001\u3069\u3061\u3089\u304b\u306e\u5f0f\u306e\u4e21\u8fba\u3092\u4f55\u500d\u304b\u3057\u3066\u3001x\u304by\u306e\u3069\u3061\u3089\u304b\u306e\u4fc2\u6570\u306e\u7d76\u5bfe\u5024\u3092\u5408\u308f\u305b\u3066\u304b\u3089\u30012\u3064\u306e\u5f0f\u306e\u5de6\u8fba\u540c\u58eb\u3001\u53f3\u8fba\u540c\u58eb\u3092\u8db3\u3057\u3066x\u307e\u305f\u306fy\u3092\u6d88\u53bb\u3057\u307e\u3059\u3002<\/p>\n

\u25a0\u30b9\u30c6\u30c3\u30d7\u2460<\/p>\n

$$\\begin{eqnarray}
\n\\left\\{
\n\\begin{array}{l}
\n2\ud835\udc65+\ud835\udc66=3\u30fb\u30fb\u30fb[1] \\\\
\n3\ud835\udc65\u2212\ud835\udc66=7\u30fb\u30fb\u30fb[2]
\n\\end{array}
\n\\right.
\n\\end{eqnarray}$$<\/p>\n

$$\\begin{eqnarray}
\n\\left\\{
\n\\begin{array}{l}
\n6x-3y=12\u3000\uff08[1]\u306e\u4e21\u8fba\u30923\u500d\uff09 \\\\
\n5x+3y=-1
\n\\end{array}
\n\\right.
\n\\end{eqnarray}$$<\/p>\n

\u25a0\u30b9\u30c6\u30c3\u30d7\u2461
\n\u3053\u306e2\u5f0f\u3092\u8db3\u3057\u3066y\u3092\u6d88\u53bb\u3057\u307e\u3059\u3002<\/p>\n

$6x-3y=12$
\n$+)5x+3y=-1$
\n$11x = 11$
\n$x = 1$<\/p>\n

\u3053\u308c\u3067x=1\u3092\u6c42\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3057\u305f\u3002<\/p>\n

\u25a0\u30b9\u30c6\u30c3\u30d7\u2462
\n\u4ee3\u5165\u3067\u306f\u4fc2\u6570\u306e\u5c0f\u3055\u3044\u65b9\u304c\u8a08\u7b97\u304c\u697d\u3067\u3059\u306e\u3067\u3001[1]\u306b$x=1$\u3092\u4ee3\u5165\u3057\u3066\u3001y\u306e\u5024\u3092\u6c42\u3081\u307e\u3059\u3002<\/p>\n

$2×1-y=4$
\n$2-y=4$
\n$-y=4-2\uff08\u79fb\u9805\uff09$
\n$-y=2$
\n$y=-2$<\/p>\n

\u3088\u3063\u3066\u3001\u7b54\u3048\u306f\u3001\u300c$x=1, y=-2$\u300d\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n

(2)\u2009\u4ee3\u5165\u6cd5<\/h4>\n

\u4ee3\u5165\u6cd5\u3068\u306f\u3001\u4e00\u65b9\u306e\u5f0f\u3092\u4ed6\u65b9\u306e\u5f0f\u306b\u4ee3\u5165\u3057\u3066\u3001x\u304by\u306e\u3069\u3061\u3089\u304b\u3092\u6d88\u53bb\u3057\u3066\u89e3\u304f\u65b9\u6cd5\u3067\u3059\u3002<\/p>\n

\u3010\u4f8b\u984c1\u3011<\/strong>
\n$$\\begin{eqnarray}
\n\\left\\{
\n\\begin{array}{l}
\n2\ud835\udc65+\ud835\udc66=3\u30fb\u30fb\u30fb[1] \\\\
\n3\ud835\udc65\u2212\ud835\udc66=7\u30fb\u30fb\u30fb[2]
\n\\end{array}
\n\\right.
\n\\end{eqnarray}$$<\/p>\n

$$\\begin{eqnarray}
\n\\left\\{
\n\\begin{array}{l}
\ny=3x \u30fb\u30fb\u30fb[1] \\\\
\n5x-y=4 \u30fb\u30fb\u30fb[2]
\n\\end{array}
\n\\right.
\n\\end{eqnarray}$$<\/p>\n

\u3010\u89e3\u304d\u65b9\u3011<\/strong><\/p>\n

\u25a0\u30b9\u30c6\u30c3\u30d7\u2460
\n[1]\u304c\u6700\u521d\u304b\u3089y=\u306e\u5f62\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u306e\u3067\u3001[1]\u3092[2]\u306b\u4ee3\u5165\u3057\u307e\u3059\u3002<\/p>\n

$5x-(3x)=4$
\n$5x-3x=4$
\n$2x=4$
\n$x=2$<\/p>\n

\u307e\u305ax=2\u3092\u6c42\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3057\u305f\u3002<\/p>\n

\u25a0\u30b9\u30c6\u30c3\u30d7\u2461
\n\u6b21\u306b\u3001$x=2$\u3092[1]\u306b\u4ee3\u5165\u3059\u308b\u3068\u3001$y=3×2=6$\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n

\u3088\u3063\u3066\u3001\u7b54\u3048\u306f\u3001\u300c$x=2, y=6$\u300d\u3067\u3059\u3002<\/p>\n

\u3053\u306e\u4f8b\u984c\u306f\u3001\u7247\u65b9\u306e\u5f0f\u304c\u3059\u3067\u306by=\u306e\u5f62\u306b\u306a\u3063\u3066\u3044\u307e\u3057\u305f\u304c\u3001\u305d\u3046\u3067\u306a\u3044\u5834\u5408\u306f\u3001\u3069\u3061\u3089\u304b\u306e\u5f0f\u3092\u300c$y=$\u300d\u304b\u300c$x=$\u300d\u306e\u5f62\u306b\u3057\u3066\u3001\u4ed6\u65b9\u306b\u4ee3\u5165\u3057\u3066\u3044\u304d\u307e\u3059\u3002
\n\u3053\u308c\u304c\u4ee3\u5165\u6cd5\u306e\u91cd\u8981\u306a\u30dd\u30a4\u30f3\u30c8\u306b\u306a\u308a\u307e\u3059\u3002
\n\u4e00\u822c\u7684\u306b\u306f\u30012\u3064\u306e\u5f0f\u3092\u898b\u6bd4\u3079\u3066\u3001\u4fc2\u6570\u306e\u5c0f\u3055\u3044\u9805\u3092\u9078\u3093\u3067\u3001$y=$\u304b$x=$\u306e\u5f62\u306b\u3059\u308b\u3068\u8a08\u7b97\u304c\u697d\u306b\u306a\u308a\u307e\u3059\u3002
\n\u591a\u304f\u306e\u8a08\u7b97\u554f\u984c\u3092\u89e3\u3044\u3066\u3001\u3055\u307e\u3056\u307e\u306a\u89e3\u304d\u65b9\u306e\u30d1\u30bf\u30fc\u30f3\u306b\u6163\u308c\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n

\u9023\u7acb\u65b9\u7a0b\u5f0f\u306e\u6587\u7ae0\u554f\u984c\u306e\u89e3\u304d\u65b9<\/h3>\n

\u9023\u7acb\u65b9\u7a0b\u5f0f\u306e\u5fdc\u7528\u3068\u3057\u3066\u6587\u7ae0\u554f\u984c\u304c\u3042\u308a\u307e\u3059\u3002\u6587\u7ae0\u554f\u984c\u306e\u57fa\u790e\u3067\u306f\u3001\u6c42\u3081\u308b\u3082\u306e\u3092x,y\u3068\u3059\u308b\u3053\u3068\u304c\u591a\u3044\u3067\u3059\u3002\u305d\u306e\u30d1\u30bf\u30fc\u30f3\u306e\u4f8b\u984c\u3092\u4e0b\u8a18\u3067\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n

(1) \u4ee3\u91d1\u306e\u554f\u984c<\/h4>\n

\u3010\u4f8b\u984c\u3011<\/strong><\/p>\n

1\u500b400\u5186\u306e\u30b1\u30fc\u30ad\u30681\u500b150\u5186\u306e\u30d7\u30ea\u30f3\u3092\u3042\u308f\u305b\u306610\u500b\u8cb7\u3063\u305f\u3089\u3001\u4ee3\u91d1\u306e\u5408\u8a08\u304c2500\u5186\u3067\u3057\u305f\u3002\u30b1\u30fc\u30ad\u3068\u30d7\u30ea\u30f3\u3092\u305d\u308c\u305e\u308c\u4f55\u500b\u8cb7\u3044\u307e\u3057\u305f\u304b\u3002<\/p>\n

\u3010\u89e3\u304d\u65b9\u3011<\/strong><\/p>\n

\u8cb7\u3063\u305f\u30b1\u30fc\u30ad\u306e\u500b\u6570\u3001\u30d7\u30ea\u30f3\u306e\u500b\u6570\u306e2\u3064\u3068\u3082\u308f\u304b\u3089\u306a\u3044\u306e\u3067\u3001\u30b1\u30fc\u30ad\u306e\u500b\u6570\u3092$x$\u500b\u3001\u30d7\u30ea\u30f3\u306e\u500b\u6570\u3092$y$\u500b\u3068\u3057\u307e\u3059\u3002<\/p>\n

\u307e\u305a\u3001\u500b\u6570\u306e\u95a2\u4fc2\u3092\u307f\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002
\n\u5408\u8a0810\u500b\u8cb7\u3063\u305f\u306e\u3067\u3001$x+y=10$ \u3068\u306a\u308a\u307e\u3059\u306d\u3002<\/p>\n

\u6b21\u306b\u3001\u4ee3\u91d1\u306e\u95a2\u4fc2\u3067\u3059\u3002
\n\u30b1\u30fc\u30ad\u3060\u3051\u306e\u4ee3\u91d1\u306f $400\u5186 x x\u500b=400x$\u306b\u3001\u30d7\u30ea\u30f3\u3060\u3051\u306e\u4ee3\u91d1\u306f $150\u5186 x y\u500b=150y$ \u3068\u306a\u308a\u3001\u305d\u306e\u5408\u8a08\u4ee3\u91d1\u304c2500\u5186\u3067\u3059\u306e\u3067\u3001$400x+150y=2500$ \u306b\u306a\u308a\u307e\u3059\u306d\u3002<\/p>\n

\u3088\u3063\u3066\u3001\u3053\u306e\u9023\u7acb\u65b9\u7a0b\u5f0f\u304c\u3067\u304d\u3042\u304c\u308a\u307e\u3059\u3002<\/p>\n

$$\\begin{eqnarray}
\n\\left\\{
\n\\begin{array}{l}
\nx+y=10\u3000\u3000\u3000 \u30fb\u30fb\u30fb[1] \\\\
\n400x+150y=2500\u3000 \u30fb\u30fb\u30fb[2]
\n\\end{array}
\n\\right.
\n\\end{eqnarray}$$<\/p>\n

\u52a0\u6e1b\u6cd5\u3067\u89e3\u304f\u3068
\n$150x + 150y =1500\u3000\uff08 [1]\u306e\u4e21\u8fba\u3092x150\uff09$
\n$-) 400x + 150y = 2500$
\n$-250x = -1000$
\n$x = 4$<\/p>\n

[1]\u306b$x=4$\u3092\u4ee3\u5165\u3057y\u3092\u6c42\u3081\u308b\u3068\u3001$y=6$\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n

\u3064\u307e\u308a\u3001\u7b54\u3048\u306f\u300c\u30b1\u30fc\u30ad\u306f4\u500b\u3001\u30d7\u30ea\u30f3\u306f6\u500b\u300d\u3067\u3059\u3002<\/p>\n

(2) \u9053\u306e\u308a\u306e\u554f\u984c<\/h4>\n

\u9053\u306e\u308a\u3001\u901f\u3055\u3001\u6642\u9593\u306e\u95a2\u4fc2\u3092\u304a\u3055\u3089\u3044\u3057\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002\u9023\u7acb\u65b9\u7a0b\u5f0f\u306e\u6587\u7ae0\u984c\u3067\u3088\u304f\u51fa\u984c\u3055\u308c\u307e\u3059\uff01<\/p>\n

\u3010\u4f8b\u984c\u3011<\/strong><\/p>\n

A\u3055\u3093\u306f\u3001\u5bb6\u304b\u30891000m\u5148\u306e\u5b66\u6821\u306b\u3044\u304f\u306e\u306b\u3001\u306f\u3058\u3081\u306f\u5206\u901f50m\u306e\u901f\u3055\u3067\u6b69\u304d\u307e\u3057\u305f\u304c\u3001\u9045\u523b\u3057\u305d\u3046\u306b\u306a\u3063\u305f\u306e\u3067\u3001\u9014\u4e2d\u304b\u3089\u3001\u5206\u901f150m\u306e\u901f\u3055\u3067\u8d70\u308a\u307e\u3057\u305f\u3002\u3053\u306e\u3068\u304d\u3001\u5bb6\u304b\u3089\u5b66\u6821\u307e\u3067\u306b\u304b\u304b\u3063\u305f\u6642\u9593\u306f15\u5206\u3067\u3057\u305f\u3002A\u3055\u3093\u304c\u6b69\u3044\u305f\u9053\u306e\u308a\u3068\u8d70\u3063\u305f\u9053\u306e\u308a\u306f\u3001\u305d\u308c\u305e\u308c\u4f55m\u3067\u3059\u304b\u3002<\/p>\n

\u3010\u89e3\u304d\u65b9\u3011<\/strong><\/p>\n

A\u3055\u3093\u304c\u6b69\u3044\u305f\u9053\u306e\u308a\u3092$x m$\u3001\u8d70\u3063\u305f\u9053\u306e\u308a\u3092$y m$\u3068\u3057\u307e\u3059\u3002<\/p>\n

\u307e\u305a\u3001\u9053\u306e\u308a\u306e\u95a2\u4fc2\u3092\u307f\u307e\u3059\u3002
\n\u554f\u984c\u6587\u306e\u6700\u521d\u306b\u300c\u5bb6\u304b\u3089\u5b66\u6821\u307e\u3067\u306f1000m\u300d\u3068\u3042\u308b\u306e\u3067\u3001
\n$x+y=1000$ \u3067\u3059\u3002<\/p>\n

\u6b21\u306b\u3001\u6642\u9593\u306e\u95a2\u4fc2\u3092\u307f\u307e\u3059\u3002
\n\u6b69\u3044\u305f\u6642\u9593\u306f\u3001$x m$\u306e\u9053\u306e\u308a\u3092\u5206\u901f$50m$\u3067\u6b69\u3044\u305f\u306e\u3067\u3001$\\frac{x}{50}$ \u5206\u306b\u306a\u308a\u307e\u3059\u306d\u3002
\n\u540c\u69d8\u306b\u3001\u8d70\u3063\u305f\u6642\u9593\u306f\u3001$\\frac{y}{150}$ \u5206\u306b\u306a\u308a\u307e\u3059\u3002
\n\u3053\u306e\u6b69\u3044\u305f\u6642\u9593\u3068\u8d70\u3063\u305f\u6642\u9593\u306e\u5408\u8a08\u304c15\u5206\u3067\u3059\u306e\u3067\u3001
\n$\\frac{x}{50} + \\frac{y}{150} = 15$ \u3068\u3044\u3046\u5f0f\u304c\u3067\u304d\u3042\u304c\u308a\u307e\u3059\u3002<\/p>\n

\u3088\u3063\u3066\u3001\u3053\u306e\u9023\u7acb\u65b9\u7a0b\u5f0f\u304c\u3067\u304d\u3042\u304c\u308a\u307e\u3059\u3002<\/p>\n

$$\\begin{eqnarray}
\n\\left\\{
\n\\begin{array}{l}
\nx+y=1000\u3000\u3000\u3000 \u30fb\u30fb\u30fb[1] \\\\
\n\\frac{x}{50} +\\frac{y}{150} = 15\u3000 \u30fb\u30fb\u30fb[2]
\n\\end{array}
\n\\right.
\n\\end{eqnarray}$$<\/p>\n

\u52a0\u6e1b\u6cd5\u3067\u89e3\u304f\u3068
\n$x + y =1000$
\n$-) 3x + y = 2250\u3000\uff08 [2]\u306e\u4e21\u8fba\u3092x150\uff09$
\n$-2x = -1250$
\n$x = 625$<\/p>\n

[1]\u306b$x=625$\u3092\u4ee3\u5165\u3057$y$\u3092\u6c42\u3081\u308b\u3068\u3001$y=375$\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n

\u3088\u3063\u3066\u3001\u7b54\u3048\u306f\u300c\u6b69\u3044\u305f\u9053\u306e\u308a\u306f625m\u3001\u8d70\u3063\u305f\u9053\u306e\u308a\u306f375m\u300d\u3067\u3059\u3002<\/p>\n

\u4e00\u6b21\u95a2\u6570<\/h2>\n

\u4e00\u6b21\u95a2\u6570\u3063\u3066\u4f55\uff1f<\/h3>\n

\u4e00\u6b21\u95a2\u6570\u306f\u3001\u5f0f\u3067\u3044\u3046\u3068\u300c$y=ax+b$\u300d\u306e\u5f62\u3092\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n

\u3053\u306e\u5f0f\u3067\u306f\u3001x\u304cy\u306e\u4e00\u6b21\u5f0f\u3067\u8868\u3055\u308c\u3066\u3044\u308b\u306e\u3067\u3001\u300c\u4e00\u6b21\u95a2\u6570\u300d\u3068\u547c\u3070\u308c\u307e\u3059\u3002\u3053\u3053\u3067\u3001$a$\u3068$b$\u306f\u5b9a\u6570\u3067\u3059\u3002\u5177\u4f53\u7684\u306a\u6570\u304c\u5165\u308b\u306e\u3067\u3001$a$\u3084$b$\u304c\u6c7a\u307e\u308b\u3068\u30011\u3064\u306e\u4e00\u6b21\u95a2\u6570\u304c\u78ba\u5b9a\u3057\u307e\u3059\u3002
\n\u4e00\u6b21\u95a2\u6570\u306f\u3001\u4e2d1\u3067\u5b66\u3093\u3060\u300c$y=ax$\u300d\u306e\u6bd4\u4f8b\u306e\u5f0f\u306b\u4f3c\u3066\u3044\u307e\u3059\u304c\u3001\u3061\u3087\u3063\u3068\u9055\u3046\u70b9\u306f\u3001\u4e00\u6b21\u95a2\u6570\u306b\u306f\u5b9a\u6570\u9805b\u304c\u3042\u308b\u3068\u3053\u308d\u3067\u3059\u3002\u3082\u3057$b$\u304c0\u306e\u5834\u5408\u3001$y=ax$\u3068\u540c\u3058\u5f62\u306b\u306a\u308a\u307e\u3059\u3002\u3064\u307e\u308a\u3001\u6bd4\u4f8b\u5f0f\u306f\u4e00\u6b21\u95a2\u6570\u306e\u4e00\u7a2e\u3068\u3057\u3066\u6271\u3048\u308b\u3093\u3067\u3059\u3002<\/p>\n

\u4e00\u6b21\u95a2\u6570\u3092\u7406\u89e3\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u4e2d1\u3067\u5b66\u3093\u3060\u6bd4\u4f8b\u3068\u53cd\u6bd4\u4f8b\u304c\u3057\u3063\u304b\u308a\u57fa\u790e\u306b\u306a\u308a\u307e\u3059\u3002\u3082\u3057\u307e\u3060\u5c11\u3057\u7406\u89e3\u304c\u66d6\u6627\u306a\u3068\u3053\u308d\u304c\u3042\u308c\u3070\u3001\u307e\u305a\u6bd4\u4f8b\u3068\u53cd\u6bd4\u4f8b\u306e\u5fa9\u7fd2\u3092\u3057\u3066\u304a\u304f\u3068\u826f\u3044\u3067\u3057\u3087\u3046\u3002
\n\u3055\u3089\u306b\u3001\u4e2d3\u3067\u306f\u4e8c\u6b21\u95a2\u6570\u304c\u767b\u5834\u3057\u307e\u3059\u3002\u6bd4\u4f8b\u3084\u53cd\u6bd4\u4f8b\u304b\u3089\u59cb\u307e\u308b\u4e00\u6b21\u95a2\u6570\u306e\u6d41\u308c\u3092\u3057\u3063\u304b\u308a\u30de\u30b9\u30bf\u30fc\u3057\u3066\u304a\u3051\u3070\u3001\u6b21\u306e\u5358\u5143\u306b\u3082\u30b9\u30e0\u30fc\u30ba\u306b\u9032\u3081\u307e\u3059\u3088<\/p>\n

\u4e00\u6b21\u95a2\u6570\u306e\u57fa\u672c\u5f0f<\/h3>\n

\u4e00\u6b21\u95a2\u6570\u306e\u57fa\u672c\u306e\u5f0f\u306f\u300c$y=ax+b$\u300d<\/strong>\u3067\u3059\u3002<\/p>\n

\u3053\u306e\u5f0f\u306f\u3057\u3063\u304b\u308a\u3068\u899a\u3048\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002\u30c6\u30b9\u30c8\u3067\u4e00\u6b21\u95a2\u6570\u306e\u554f\u984c\u304c\u51fa\u305f\u3068\u304d\u306b\u306f\u3001\u3059\u3050\u306b\u300c$y=ax+b$\u300d\u3068\u601d\u3044\u6d6e\u304b\u3079\u3089\u308c\u308b\u3088\u3046\u306b\u3057\u3066\u304a\u304f\u3053\u3068\u304c\u5927\u5207\u3067\u3059\u3002
\na<\/strong>\u306f\u300c\u50be\u304d<\/strong>\u300d\u307e\u305f\u306f\u300c\u5909\u5316\u306e\u5272\u5408<\/strong>\u300d\u3067\u3059\u3002
\nb<\/strong>\u306f\u300c\u5207\u7247\uff08\u305b\u3063\u307a\u3093\uff09<\/strong>\u300d\u3068\u547c\u3070\u308c\u308b\u6570\u3067\u3059\u3002<\/p>\n

\u50be\u304da\u306f\u3001\u4e00\u6b21\u95a2\u6570\u306e\u30b0\u30e9\u30d5\u306e\u76f4\u7dda\u304c\u3069\u308c\u304f\u3089\u3044\u50be\u3044\u3066\u3044\u308b\u304b\u3092\u8868\u3057\u307e\u3059\u3002\u307e\u305f\u3001\u5909\u5316\u306e\u5272\u5408\u306f\u3001x\u306e\u5897\u52a0\u306b\u5bfe\u3057\u3066y\u304c\u3069\u308c\u304f\u3089\u3044\u5897\u3048\u308b\u304b\u3001\u3068\u3044\u3046\u5272\u5408\u3092\u793a\u3057\u307e\u3059\u3002\u3053\u306e\u300c\u50be\u304d\u300d\u3068\u300c\u5909\u5316\u306e\u5272\u5408\u300d\u306f\u3001\u540c\u3058\u3082\u306e\u3092\u5358\u306b\u8a00\u3044\u63db\u3048\u305f\u3060\u3051\u3067\u3059\u3002
\n\u5207\u7247\u306f\u3001\u4e00\u6b21\u95a2\u6570\u306e\u30b0\u30e9\u30d5\u304cy\u8ef8\u3068\u4ea4\u308f\u308b\u70b9\u3067\u3059\u3002\u3064\u307e\u308a\u3001\u5ea7\u6a19\u3067\u3044\u3046\u3068\uff080,b\uff09\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n

\u3053\u308c\u3089\u306e\u8a00\u8449\u306e\u610f\u5473\u3092\u3057\u3063\u304b\u308a\u899a\u3048\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n

\u3010\u4f8b\u984c\u3011<\/strong><\/p>\n

    \n
  • \u50be\u304d\u304c3\u3001\u5207\u7247\u304c-2\u306e\u4e00\u6b21\u95a2\u6570\u306e\u5f0f\u306f\u300c$y=3x-2$\u300d<\/li>\n
  • \u50be\u304d\u304c-2\u3001\u5207\u7247\u304c7\u306e\u4e00\u6b21\u95a2\u6570\u306e\u5f0f\u306f\u300c$y=-2x+7$\u300d<\/li>\n
  • \u5909\u5316\u306e\u5272\u5408\u304c3\u3001\u5207\u7247\u304c-5\u306e\u4e00\u6b21\u95a2\u6570\u306e\u5f0f\u306f\u300c$y=3x-5$\u300d<\/li>\n
  • \u4e00\u6b21\u95a2\u6570$y=-4x+3$\u306e\u50be\u304d\u3068\u5207\u7247\u306f\u300c\u50be\u304d-4\u3001\u5207\u72473\u300d<\/li>\n<\/ul>\n

    \u4e00\u6b21\u95a2\u6570\u306e\u57fa\u672c\u554f\u984c\u306e\u89e3\u304d\u65b9<\/h3>\n

    \u4e00\u6b21\u95a2\u6570\u306e\u554f\u984c\u306e\u4ee3\u8868\u7684\u306a\u3082\u306e\u306f\u4ee5\u4e0b\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n

    (1) \u5909\u5316\u306e\u5272\u5408\u3092\u6c42\u3081\u308b
    \n(2) y\u306e\u5897\u52a0\u91cf\u3092\u6c42\u3081\u308b
    \n(3) \u30b0\u30e9\u30d5\u304b\u3089\u5f0f\u3092\u6c42\u3081\u308b
    \n(4) 2\u3064\u306e\u5ea7\u6a19\u306e\u5024\u304b\u3089\u76f4\u7dda\u306e\u5f0f\u3092\u6c42\u3081\u308b
    \n(5) x\u8ef8\u3068\u306e\u4ea4\u70b9\u306e\u5ea7\u6a19\u3092\u6c42\u3081\u308b
    \n(6) \u5909\u57df\u3092\u6c42\u3081\u308b<\/p>\n

    \u3053\u3053\u304b\u3089\u306f\u3001\u4f8b\u984c\u3092\u7528\u3044\u3001\u4e00\u6b21\u95a2\u6570\u306e\u57fa\u790e\u554f\u984c\u306e\u89e3\u304d\u65b9\u306e\u30dd\u30a4\u30f3\u30c8\u3092\u89e3\u8aac\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n

    (1) \u5909\u5316\u306e\u5272\u5408\u3092\u6c42\u3081\u308b\u554f\u984c<\/h3>\n

    \u5909\u5316\u306e\u5272\u5408\u3068\u306f\u3001x\u306e\u5897\u52a0\u91cf\u306b\u5bfe\u3059\u308by\u306e\u5897\u52a0\u91cf\u306e\u5272\u5408\u3067\u3059\u3002
    \n\u5909\u5316\u306e\u5272\u5408 =$\\frac{y\u306e\u5897\u52a0\u91cf}{x\u306e\u5897\u52a0\u91cf}$
    \n\u3053\u3053\u3067\u300c\u5897\u52a0\u91cf\u300d\u3068\u3044\u3046\u65b0\u3057\u3044\u7528\u8a9e\u304c\u767b\u5834\u3057\u307e\u3059\u304c\u3001\u3053\u308c\u306f\u300c2\u3064\u306e\u6570\u5b57\u306e\u5dee\uff08\u5f15\u304d\u7b97\uff09\u300d\u306e\u3053\u3068\u3067\u3059\u3002<\/p>\n

     <\/p>\n

    \u3053\u306e\u3088\u3046\u306b\u3001\u5897\u52a0\u91cf\u306f\u300c\u524d\u306e\u6570\u304b\u3089\u5f8c\u306e\u6570\u3092\u5f15\u3044\u305f\u5dee\u300d\u3092\u610f\u5473\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n

    \u3010\u4f8b\u984c\u3011<\/strong><\/p>\n

    $x\u304c2\u304b\u30896$\u306b\u5897\u52a0\u3057\u305f\u3068\u304d\u3001$y\u306f-5\u304b\u30893$\u306b\u5897\u52a0\u3057\u305f\u3068\u3057\u307e\u3059\u3002\u3053\u306e\u5834\u5408\u306e\u5909\u5316\u306e\u5272\u5408\u3092\u6c42\u3081\u3088\u3002<\/p>\n

    \u3010\u89e3\u304d\u65b9\u3011<\/strong><\/p>\n

    \u307e\u305a$x$\u3068$y$\u306e\u5897\u52a0\u91cf\u3092\u305d\u308c\u305e\u308c\u8a08\u7b97\u3057\u307e\u3059\u3002<\/p>\n

    $x\u306e\u5897\u52a0\u91cf\uff1a6-2=4$
    \n$y\u306e\u5897\u52a0\u91cf\uff1a3-(-5)=3+5=8$<\/p>\n

    \u5909\u5316\u306e\u5272\u5408\u306f\u3001$\\frac{y\u306e\u5897\u52a0\u91cf}{x\u306e\u5897\u52a0\u91cf}$<\/p>\n

    \u5909\u5316\u306e\u5272\u5408=$\\frac{8}{4}$=2 \u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n

    \u5909\u5316\u306e\u5272\u5408\u306f\u3001\u30b0\u30e9\u30d5\u3092\u66f8\u304f\u3068\u304d\u3084\u76f4\u7dda\u306e\u5f0f\u3092\u6c42\u3081\u308b\u3068\u304d\u306b\u3068\u3066\u3082\u5927\u4e8b\u306a\u306e\u3067\u3001\u7406\u89e3\u3092\u6df1\u3081\u307e\u3057\u3087\u3046\u3002<\/p>\n

     <\/p>\n

    (2) y\u306e\u5897\u52a0\u91cf\u3092\u6c42\u3081\u308b\u554f\u984c<\/h3>\n

    \u3010\u4f8b\u984c\u3011<\/strong><\/p>\n

    $y=2x+4$\u306b\u304a\u3044\u3066\u3001$x\u304c1\u304b\u30896$\u307e\u3067\u5897\u52a0\u3059\u308b\u3068\u304d\u306ey\u306e\u5897\u52a0\u91cf\u3092\u6c42\u3081\u3088\u3002<\/p>\n

    \u3010\u89e3\u304d\u65b9\u3011<\/strong><\/p>\n

    $x\u306e1\u304b\u30896\u307e\u3067\u306e\u5897\u52a0\u306b\u3068\u3082\u306a\u3044\u3001y\u304c\u3069\u308c\u3060\u3051\u5897\u52a0\uff08\u5909\u5316\uff09\u3059\u308b\u304b\u3092\u8a08\u7b97\u3057\u307e\u3059\u3002$<\/p>\n

    $x=6\u306e\u6642\u3001y=2×6+4 =12+4=16$
    \n$x=1\u306e\u6642\u3001y=2×1+4 =2+4=6$<\/p>\n

    $\u306b\u306a\u308a\u307e\u3059\u306e\u3067\u3001y\u306e\u5897\u52a0\u91cf=16-6=10 \u3068\u306a\u308a\u307e\u3059$\u3002<\/p>\n

     <\/p>\n

    \u3010\u89e3\u304d\u65b9\u3011<\/strong><\/p>\n

    \u4e00\u6b21\u95a2\u6570\u306e\u57fa\u672c\u5f0f$\u300cy=ax+b\u300d$\u304b\u3089\u59cb\u307e\u308a\u307e\u3059\u3002<\/p>\n

    \u76f4\u7dda\u304c\u70b9$\uff08-1,6\uff09$\u3092\u901a\u308b\u3053\u3068\u304b\u3089\u3001$x=-1, y=6$\u3092\u300c$y=ax+b\u300d$\u306b\u4ee3\u5165\u3059\u308b\u3068\u3001
    \n$6=a*(-1)+b$
    \n$6=-a+b\u3000\u3000\u3000\u30fb\u30fb\u30fb[1]$<\/p>\n

    \u307e\u305f\u3001\u76f4\u7dda\u304c\u70b9$\uff083,-2\uff09$\u3092\u901a\u308b\u3053\u3068\u304b\u3089$\u3001x=3, y=-2\u3092\u300cy=ax+b\u300d$\u306b\u4ee3\u5165\u3059\u308b\u3068\u3001
    \n$\u3000-2=a*3+b$
    \n$ -2=3a+b\u3000\u3000\u30fb\u30fb\u30fb[2]$<\/p>\n

    \u306b\u306a\u308a\u307e\u3059\u3002\u3053\u306e[1][2]\u306e\u4e8c\u3064\u306e\u5f0f\u3092\u9023\u7acb\u65b9\u7a0b\u5f0f\u3068\u3057\u3066a\u3068b\u3092\u6c42\u3081\u307e\u3059\u3002<\/p>\n

    \u9023\u7acb\u65b9\u7a0b\u5f0f\u306e\u52a0\u6e1b\u6cd5\u3092\u7528\u3044\u308b\u3068\u3001<\/p>\n

    $6=-a+b$
    \n$-)-2=3a+b$
    \n$6-(-2)=(-1-3)*a$
    \n$8=-4a$
    \n$a=-2$<\/p>\n

    [1]\u306b$a=-2$\u3092\u4ee3\u5165\u3059\u308b\u3068\u3001$6=(-1)*(-2)+b$\u306b\u306a\u308b\u306e\u3067\u3001$b=4$<\/p>\n

    \u3088\u3063\u3066\u3001\u6c42\u3081\u308b\u76f4\u7dda\u306e\u5f0f\u306f\u3001$y=-2x+4 $\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n

    (3) \u30b0\u30e9\u30d5\u304b\u3089\u5f0f\u3092\u6c42\u3081\u308b\u554f\u984c<\/h4>\n

    \u3010\u4f8b\u984c\u3011<\/p>\n

    $x\u8ef8\u3068\u306e\u4ea4\u70b9\uff08-2,0\uff09\u3068\u3001y\u8ef8\u3068\u306e\u4ea4\u70b9\uff080,4\uff09\u3092\u76f4\u7dda\u3067\u7d50\u3076\u5f0f\u3092\u6c42\u3081\u3088\u3002$<\/p>\n

    \u3010\u89e3\u304d\u65b9\u3011<\/p>\n

    $\u4e00\u6b21\u95a2\u6570\u306e\u57fa\u672c\u5f0f\u300cy = ax + b\u300d\u3092\u601d\u3044\u51fa\u3057\u307e\u3057\u3087\u3046\u3002$
    \n$\u4eca\u56de\u6c42\u3081\u305f\u3044\u76f4\u7dda\u306e\u5f0f\u3082\u3001\u3053\u306e\u5f62\u306b\u306a\u308a\u307e\u3059\u3002\u3042\u3068\u306f\u3001a\uff08\u50be\u304d\uff09\u3068b\uff08\u5207\u7247\uff09\u306e\u5024\u3092\u6c42\u3081\u308c\u3070OK\u3067\u3059\u3002$<\/p>\n

    $\u307e\u305a\u5207\u7247b\u306f\u3001y\u8ef8\u3068\u306e\u4ea4\u70b9\u3092\u898b\u308c\u3070\u308f\u304b\u308a\u307e\u3059\u3002\u4eca\u56de\u306ey\u8ef8\u3068\u306e\u4ea4\u70b9\u306f\uff080, 4\uff09\u306a\u306e\u3067\u3001b = 4 \u3067\u3059\u3002$<\/p>\n

    \u3064\u307e\u308a\u3001\u3053\u306e\u6642\u70b9\u3067\u5f0f\u306f\u3001<\/p>\n

    $$y = ax + 4\u3000\u30fb\u30fb\u30fb[1]$$<\/p>\n

    \u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n

    \u6b21\u306b\u3001\u50be\u304d\u3092\u6c42\u3081\u307e\u3059\u3002<\/p>\n

    $\u30b0\u30e9\u30d5\u3092\u898b\u308b\u3068\u3001x\u8ef8\u3068\u306e\u4ea4\u70b9\u306f\uff08-2, 0\uff09\u306a\u306e\u3067\u3001x\u306f -2 \u304b\u3089 0 \u306b\u5897\u3048\u305f\u3001\u3064\u307e\u308a x\u306e\u5897\u52a0\u91cf\u306f 2\u306b\u306a\u308a\u307e\u3059\u3002\u305d\u308c\u306b\u5bfe\u3057\u3066\u3001y\u306f 0 \u304b\u3089 4 \u306b\u5897\u3048\u305f\u306e\u3067\u3001y\u306e\u5897\u52a0\u91cf\u306f 4\u3067\u3059\u3002$<\/p>\n

    \u3057\u305f\u304c\u3063\u3066\u3001\u5909\u5316\u306e\u5272\u5408\uff08\u50be\u304d\uff09a \u306f\u3001<\/p>\n

    (4) 2\u3064\u306e\u5ea7\u6a19\u306e\u5024\u304b\u3089\u76f4\u7dda\u306e\u5f0f\u3092\u6c42\u3081\u308b\u554f\u984c<\/h4>\n

    \u3053\u308c\u306f\u4e00\u6b21\u95a2\u6570\u5f0f\u300cy=ax+b\u300d\u3092\u3082\u3068\u306b\u3001\u9023\u7acb\u65b9\u7a0b\u5f0f\u3092\u4f7f\u3063\u3066\u6c42\u3081\u308b\u554f\u984c\u3067\u3059\u3002
    \n\u9023\u7acb\u65b9\u7a0b\u5f0f\u306e\u7406\u89e3\u304c\u4e0d\u5341\u5206\u306b\u611f\u3058\u308b\u5834\u5408\u306f\u3001\u524d\u306b\u623b\u3063\u3066\u5fa9\u7fd2\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n

    \u3010\u4f8b\u984c\u3011<\/p>\n

    2\u70b9\uff08-1, 6\uff09\u3068\uff083, -2\uff09\u3092\u901a\u308b\u76f4\u7dda\u306e\u5f0f\u3092\u6c42\u3081\u3088\u3002<\/p>\n

    \u3010\u89e3\u304d\u65b9\u3011<\/span><\/p>\n

    \u4e00\u6b21\u95a2\u6570\u306e\u57fa\u672c\u5f0f\u300c<\/span>y<\/span>=a<\/span>x<\/span>+b\u300d\u304b\u3089\u59cb\u307e\u308a\u307e\u3059\u3002<\/span><\/p>\n

    \u76f4\u7dda\u304c\u70b9\uff08-1,6\uff09\u3092\u901a\u308b\u3053\u3068\u304b\u3089\u3001<\/span>x<\/span>=-1, <\/span>y<\/span>=6\u3092\u300c<\/span>y<\/span>=a<\/span>x<\/span>+b\u300d\u306b\u4ee3\u5165\u3059\u308b\u3068\u3001<\/span><\/p>\n

    6=a*(-1)+b
    \n<\/span>6=-a+b\u30fb\u30fb\u30fb[1]<\/span><\/p>\n

    \u307e\u305f\u3001\u76f4\u7dda\u304c\u70b9\uff083,-2\uff09\u3092\u901a\u308b\u3053\u3068\u304b\u3089\u3001<\/span>x<\/span>=3, y=-2\u3092\u300cy=a<\/span>x<\/span>+b\u300d\u306b\u4ee3\u5165\u3059\u308b\u3068\u3001<\/span><\/p>\n

    -2=a*3+b
    \n<\/span>-2=3a+b\u30fb\u30fb\u30fb[2]<\/span><\/p>\n

    \u306b\u306a\u308a\u307e\u3059\u3002\u3053\u306e[1][2]\u306e\u4e8c\u3064\u306e\u5f0f\u3092\u9023\u7acb\u65b9\u7a0b\u5f0f\u3068\u3057\u3066a\u3068b\u3092\u6c42\u3081\u307e\u3059\u3002<\/span><\/p>\n

    \u9023\u7acb\u65b9\u7a0b\u5f0f\u306e\u52a0\u6e1b\u6cd5\u3092\u7528\u3044\u308b\u3068\u3001<\/span><\/p>\n

     <\/p>\n

    \u3000 \u00a0 \u00a0 \u00a0 6=-a+b
    \n<\/span>\u3000\u3000\u3000<\/span>-)\u00a0 -2=3a+b<\/span><\/p>\n

    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a06-(-2)=(-1-3)*a<\/span><\/p>\n

    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a08=-4a<\/span><\/p>\n

    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0a=-2<\/span><\/p>\n

     <\/p>\n

    \u3000[1]\u306ba=-2\u3092\u4ee3\u5165\u3059\u308b\u3068\u30016=(-1)*(-2)+b\u306b\u306a\u308b\u306e\u3067\u3001b=4<\/span><\/p>\n

     <\/p>\n

    \u3000\u3088\u3063\u3066\u3001\u6c42\u3081\u308b\u76f4\u7dda\u306e\u5f0f\u306f\u3001<\/span>y<\/span>=-2<\/span>x<\/span>+4 \u3068\u306a\u308a\u307e\u3059\u3002<\/span><\/p>\n

    (5) \u76f4\u7dda\u304cx\u8ef8\u3068\u4ea4\u308f\u308b\u70b9\uff08x\u8ef8\u3068\u306e\u4ea4\u70b9\uff09\u306e\u5ea7\u6a19\u3092\u6c42\u3081\u308b\u554f\u984c<\/h4>\n

    \u3010\u4f8b\u984c\u3011<\/strong><\/p>\n

    \u4e00\u6b21\u95a2\u6570$y=3x+6$\u306ex\u8ef8\u3068\u306e\u4ea4\u70b9\u306e\u5ea7\u6a19\u3092\u6c42\u3081\u3088\u3002<\/p>\n

    \u3010\u89e3\u304d\u65b9\u3011<\/strong><\/p>\n

    x\u8ef8\u306e\u4ea4\u70b9\u3068\u306f\u3001y\u304c0\u306e\u5ea7\u6a19\u3092\u6307\u3057\u307e\u3059\u3002
    \n\u3053\u306e\u554f\u984c\u3067\u306f\u3001$y=3x+6$\u306ey\u306e\u3068\u3053\u308d\u306b\u3001$y=0$\u3092\u4ee3\u5165\u3057\u3066\u5f97\u3089\u308c\u308bx\u306e\u5024\u304c\u3001x\u8ef8\u3068\u306e\u4ea4\u70b9\u306ex\u306e\u5024\u3068\u3044\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n

    y=0\u3092\u4ee3\u5165\u3059\u308b\u3068\u3001$0=3x+6$\u3068\u306a\u308a\u307e\u3059\u306e\u3067\u3001x=-2\u304c\u6c42\u3081\u3089\u308c\u307e\u3059\u3002
    \ny\u306f\u6700\u521d\u304b\u30890\u3067\u3059\u306e\u3067\u3001\u7b54\u3048\u306f\uff08-2,0\uff09\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n

    \u5ea7\u6a19\u3067\u306e\u7b54\u3048\u65b9\u3082\u4e00\u7dd2\u306b\u899a\u3048\u3066\u304a\u3044\u3066\u304f\u3060\u3055\u3044\u3002\u30b1\u30a2\u30ec\u30b9\u30df\u30b9\u304c\u51fa\u3084\u3059\u3044\u3068\u3053\u308d\u3067\u3059\u3002<\/p>\n

    (6) \u5909\u57df\u3092\u6c42\u3081\u308b\u554f\u984c<\/h4>\n

    \u3010\u4f8b\u984c\u3011<\/strong><\/p>\n

    \u4e00\u6b21\u95a2\u6570$y=4x+5$ \u306b\u304a\u3044\u3066\u3001y\u306e\u5909\u57df\u304c$13\u2266y\u226645$\u3068\u3059\u308b\u3068\u3001\u3053\u306e\u5834\u5408\u306ex\u306e\u5909\u57df\u3092\u6c42\u3081\u3088\u3002<\/p>\n

    \u3010\u89e3\u304d\u65b9\u3011<\/strong><\/p>\n

    \u5909\u57df\u306f\u3001x\u3084y\u306e\u5024\u306e\u7bc4\u56f2\u306e\u3053\u3068\u3067\u3059\u3002\u4e2d1\u306e\u6bd4\u4f8b\u30fb\u53cd\u6bd4\u4f8b\u3067\u3082\u51fa\u3066\u304d\u3066\u3044\u307e\u3059\u306e\u3067\u304a\u3055\u3089\u3044\u3057\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002
    \n\u3053\u3053\u3067\u306f\u3001y\u306e\u5909\u57df\u3068\u3057\u3066\u3001y\u306f13\u4ee5\u4e0a\u306745\u4ee5\u4e0b\u3068\u3044\u3046\u7bc4\u56f2\u304c\u793a\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n

    y\u306e\u6700\u5c0f\u502413\u306e\u6642\u306ex\u306e\u5024\u306f\u3001$13=4x+5$\u3088\u308a\u3001$x=2$
    \ny\u306e\u6700\u5927\u502445\u306e\u6642\u306ex\u306e\u5024\u306f\u3001$45=4x+5$\u3088\u308a\u3001$x=10$<\/p>\n

    \u3068\u306a\u308b\u306e\u3067\u3001\u6c42\u3081\u308bx\u306e\u5909\u57df\u306f\u300c$2\u2266x\u226610$\u300d\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n

    \u4e00\u6b21\u95a2\u6570\u306e\u6587\u7ae0\u554f\u984c\u306e\u89e3\u304d\u65b9<\/h3>\n

    \u4e00\u6b21\u95a2\u6570\u306e\u5fdc\u7528\u306f\u6587\u7ae0\u554f\u984c\u3068\u3057\u3066\u51fa\u984c\u3055\u308c\u307e\u3059\u3002\u6587\u7ae0\u554f\u984c\u306f\u3001\u554f\u984c\u6587\u306b\u66f8\u304b\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u6570\u5f0f\u306b\u7f6e\u304d\u63db\u3048\u308b\u3053\u3068\u304c\u5927\u4e8b\u306a\u30dd\u30a4\u30f3\u30c8\u306b\u306a\u308a\u307e\u3059\u3002
    \n\u4ee3\u8868\u7684\u306a\u6587\u7ae0\u984c\u3092\u7d39\u4ecb\u3057\u307e\u3059\u306e\u3067\u3001\u30b3\u30c4\u3092\u63b4\u3093\u3067\u304f\u3060\u3055\u3044\u3002<\/p>\n

    (1) \u6c34\u69fd\u306e\u554f\u984c<\/h4>\n

    \u3010\u4f8b\u984c\u3011<\/strong><\/p>\n

    50\u30ea\u30c3\u30c8\u30eb\u3067\u6e80\u30bf\u30f3\u306b\u306a\u308b\u6c34\u69fd\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u6c34\u69fd\u306b\u306f\u30015\u30ea\u30c3\u30c8\u30eb\u306e\u6c34\u304c\u3059\u3067\u306b\u5165\u3063\u3066\u3044\u307e\u3059\u3002\u3053\u3053\u306b\u6bce\u52062\u30ea\u30c3\u30c8\u30eb\u305a\u3064\u6c34\u3092\u5165\u308c\u3066\u3044\u304d\u307e\u3059\u3002\u6c34\u3092\u5165\u308c\u59cb\u3081\u3066\u304b\u3089x\u5206\u5f8c\u306e\u6c34\u69fd\u306e\u6c34\u306e\u91cf\u3092y\u30ea\u30c3\u30c8\u30eb\u3068\u3057\u3066\u3001y\u3092x\u306e\u5f0f\u3067\u8868\u3057\u306a\u3055\u3044\u3002<\/p>\n

    \u3010\u89e3\u304d\u65b9\u3011<\/strong><\/p>\n

    \u307e\u305a\u3001\u4e00\u6b21\u95a2\u6570\u306e\u57fa\u672c\u5f0f\u300c$y=ax+b$\u300d\u3092\u601d\u3044\u51fa\u3057\u307e\u3057\u3087\u3046\u3002
    \n\u6c34\u69fd\u306e\u6c34\u306e\u5909\u5316\u306e\u5272\u5408\u304ca\u306b\u306a\u308a\u3001\u6700\u521d\u306b\u5165\u3063\u3066\u3044\u305f\u6c34\u306e\u91cf\u304cb\u306b\u306a\u308a\u307e\u3059\u3002
    \n\u8a00\u3044\u63db\u3048\u308b\u3068\u3001\u6700\u521d\u306bb\u30ea\u30c3\u30c8\u30eb\u304c\u5165\u3063\u3066\u3044\u305f\u6c34\u69fd\u306b\u3001a\u306e\u5272\u5408\uff08\u5909\u5316\u306e\u5272\u5408\uff09\u3067\u6c34\u3092\u5165\u308c\u3066\u3044\u3063\u305f\u6642\u306e\u6c34\u306e\u91cf\u304cy\u306b\u306a\u308b\u308f\u3051\u3067\u3059\u3002<\/p>\n

    \u554f\u984c\u6587\u3092\u5f53\u3066\u306f\u3081\u3066\u8003\u3048\u3066\u307f\u307e\u3057\u3087\u3046\u3002
    \n\u300c\u6bce\u52062\u30ea\u30c3\u30c8\u30eb\u305a\u3064\u6c34\u3092\u5165\u308c\u308b\u300d\u3068\u3044\u3046\u3053\u3068\u306f\u3001\u6c34\u306f\u300c1\u5206\u3042\u305f\u308a2\u30ea\u30c3\u30c8\u30eb\u5897\u52a0\u300d\u3059\u308b\u3053\u3068\u3067\u3059\u306e\u3067\u3001\u5909\u5316\u306e\u5272\u5408$a=frac{2\u30ea\u30c3\u30c8\u30eb}{1\u5206}=2$\u306b\u306a\u308a\u307e\u3059\u3002
    \n\u300c5\u30ea\u30c3\u30c8\u30eb\u306e\u6c34\u304c\u3059\u3067\u306b\u5165\u3063\u3066\u3044\u307e\u3059\u300d\u3068\u3044\u3046\u3053\u3068\u306f\u300c$x\u5206=0\u306e\u6642\u306b\u3001y=5\u30ea\u30c3\u30c8\u30eb\u3042\u308b$\u300d\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u306e\u3067\u3001b=5\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n

    \u3088\u3063\u3066\u3001$a=2, b=5$\u3092$y=ax+b$\u306b\u5165\u308c\u308b\u3068\u3001\u7b54\u3048\u306f\u300c$y=2x+5$\u300d\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n

    (2)\u52d5\u304f\u70b9P\u306e\u554f\u984c<\/h4>\n

    \u52d5\u304f\u70b9P\u306e\u554f\u984c\u306f\u3001\u4e2d\u5b66\u751f\u306e\u6570\u5b66\u3067\u3064\u307e\u305a\u304d\u3084\u3059\u3044\u3068\u3053\u308d\u3067\u3059\u3002\u3088\u3046\u3084\u304fx,y\u306b\u6163\u308c\u3066\u304d\u305f\u3068\u3053\u308d\u306b\u65b0\u305f\u306bP\u304c\u52a0\u308f\u308a\u3001\u3055\u3089\u306b\u305d\u308c\u304c\u300c\u52d5\u304f\u300d\u3068\u3044\u3046\u3053\u3068\u3067\u3001\u982d\u306e\u4e2d\u304c\u6574\u7406\u3067\u304d\u305a\u306b\u82e6\u624b\u610f\u8b58\u3060\u3051\u304c\u6b8b\u3063\u3066\u3057\u307e\u3046\u306e\u3067\u3059\u304c\u3001\u843d\u3061\u7740\u3044\u3066\u3001\u554f\u984c\u6587\u306e\u610f\u5473\u3059\u308b\u3053\u3068\u3092\u4e00\u3064\u3072\u3068\u3064\u6570\u5f0f\u3067\u8868\u3059\u30b3\u30c4\u3092\u8eab\u306b\u3064\u3051\u3066\u3044\u3051\u3070\u5927\u4e08\u592b\u3067\u3059\u3002<\/p>\n

    \u3010\u4f8b\u984c\u3011<\/strong><\/p>\n

    AB\u304c3cm\u3001BC\u304c6cm\u306e\u9577\u65b9\u5f62ABCD\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u56db\u89d2\u5f62ABCD\u4e0a\u306b\u70b9P\u304c\u3042\u308a\u3001\u70b9P\u306fA\u3092\u51fa\u767a\u3057\u3066B\u2192C\u2192D\u3068\u52d5\u304d\u307e\u3059\u3002\u70b9P\u304cA\u304b\u3089$x [cm]$\u52d5\u3044\u305f\u6642\u306e\u25b3APD\u306e\u9762\u7a4d\u3092$y [cm2]$\u3068\u3057\u307e\u3059\u3002\u70b9P\u304c\u8fbaAB\u4e0a\u306b\u3042\u308b\u3068\u304d\u3001y\u3092x\u306e\u5f0f\u3067\u8868\u3057\u306a\u3055\u3044\u3002\u307e\u305f\u3053\u306e\u6642\u306ex\u306e\u5909\u57df\u3092\u7b54\u3048\u306a\u3055\u3044\u3002<\/p>\n

    \u3010\u89e3\u304d\u65b9\u3011<\/strong><\/p>\n

    \u4e09\u89d2\u5f62\u306e\u9762\u7a4d\u306e\u516c\u5f0f\u300c1\/2 x \u5e95\u8fba x \u9ad8\u3055\u300d\u3092\u601d\u3044\u51fa\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n

    \u70b9P\u304cAB\u4e0a\u306b\u3042\u308b\u6642\u306f\u3001$AP=x [cm]\u3001AD=6 [cm]\u306b\u306a\u308b\u306e\u3067\u3001
    \n\u25b3APD\u306e\u9762\u7a4d $y=1\/2 x x x 6 = 3x$ \u3068\u8868\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n

    \u307e\u305f\u3001\u3053\u306e\u6642\u306ex\u306e\u5909\u57df\u306f\u3001\u70b9P\u306fA\u304b\u3089B\u306e3cm\u304c\u52d5\u304f\u3060\u3051\u306a\u306e\u3067\u30010\u2266x\u22663\u3068\u306a\u308a\u307e\u3059\u3002
    \n\u3088\u3063\u3066\u300c$y=3x\u30010\u2266x\u22663$\u300d\u304c\u7b54\u3048\u306b\u306a\u308a\u307e\u3059\u3002
    \n\u3053\u3053\u3067\u4f7f\u7528\u3057\u305f\u306e\u306f\u3001\u4e09\u89d2\u5f62\u306e\u9762\u7a4d\u306e\u516c\u5f0f\u3060\u3051\u3067\u3059\u3002\u52d5\u304f\u70b9P\u306f\u7df4\u7fd2\u554f\u984c\u3092\u591a\u304f\u89e3\u3044\u3066\u6163\u308c\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n

    \u307e\u3068\u3081<\/h2>\n

    \u9023\u7acb\u65b9\u7a0b\u5f0f\u3068\u4e00\u6b21\u95a2\u6570\u306f\u3001\u4e2d\u5b662\u5e74\u751f\u306e\u6570\u5b66\u306e\u4e2d\u3067\u3082\u3072\u3068\u3064\u306e\u5c71\u5834\u3068\u8a00\u3048\u308b\u5358\u5143\u3067\u3059\u3002\u6570\u5b66\u306f\u7a4d\u307f\u91cd\u306d\u306e\u6559\u79d1\u306a\u306e\u3067\u3001\u3053\u308c\u3089\u3092\u7406\u89e3\u3059\u308b\u306b\u306f\u3001\u4e2d1\u3067\u5b66\u3093\u3060\u5185\u5bb9\u304c\u3057\u3063\u304b\u308a\u8eab\u306b\u3064\u3044\u3066\u3044\u308b\u3053\u3068\u304c\u5927\u5207\u3067\u3059\u3002\u308f\u304b\u3089\u306a\u3044\u307e\u307e\u5148\u306b\u9032\u307e\u305a\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u524d\u306e\u5b66\u5e74\u306e\u5185\u5bb9\u3092\u898b\u76f4\u3059\u3053\u3068\u3082\u5927\u5207\u306b\u3057\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n

    \u307e\u305a\u300c\u9023\u7acb\u65b9\u7a0b\u5f0f\u300d\u3067\u306f\u3001x\u3068y\u3068\u3044\u30462\u3064\u306e\u6587\u5b57\u306e\u5024\u3092\u6c42\u3081\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\u89e3\u304d\u65b9\u306b\u306f\u300c\u52a0\u6e1b\u6cd5\u300d\u3068\u300c\u4ee3\u5165\u6cd5\u300d\u306e2\u7a2e\u985e\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u3069\u3061\u3089\u3082\u4f7f\u3048\u308b\u3088\u3046\u306b\u306a\u3063\u3066\u304a\u304f\u3068\u5b89\u5fc3\u3067\u3059\u3002\u89e3\u304d\u65b9\u306e\u30d1\u30bf\u30fc\u30f3\u3092\u899a\u3048\u305f\u3089\u3001\u7df4\u7fd2\u554f\u984c\u3092\u7e70\u308a\u8fd4\u3057\u3066\u3001\u3057\u3063\u304b\u308a\u8eab\u306b\u3064\u3051\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n

    \u4e00\u65b9\u3001\u300c\u4e00\u6b21\u95a2\u6570\u300d\u306f\u300c$y = ax + b$\u300d\u306e\u5f62\u3067\u8868\u3055\u308c\u308b\u95a2\u6570\u3067\u3059\u3002\u3053\u306e\u5f0f\u306e\u5f62\u306f\u3068\u3066\u3082\u5927\u4e8b\u306a\u306e\u3067\u3001\u3057\u3063\u304b\u308a\u899a\u3048\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002\u30b0\u30e9\u30d5\u306b\u3059\u308b\u3068\u76f4\u7dda\u306b\u306a\u308b\u3001\u3068\u3044\u3046\u7279\u5fb4\u3082\u30dd\u30a4\u30f3\u30c8\u3067\u3059\u3002\u4e00\u6b21\u95a2\u6570\u306e\u554f\u984c\u306b\u306f\u3001\u9023\u7acb\u65b9\u7a0b\u5f0f\u3092\u4f7f\u3063\u3066\u89e3\u304f\u3082\u306e\u3001\u30b0\u30e9\u30d5\u304b\u3089\u60c5\u5831\u3092\u8aad\u307f\u53d6\u308b\u3082\u306e\u3001\u6587\u7ae0\u3092\u5f0f\u306b\u3059\u308b\u3082\u306e\u306a\u3069\u3001\u3044\u308d\u3044\u308d\u306a\u30d1\u30bf\u30fc\u30f3\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u308c\u305e\u308c\u306e\u30bf\u30a4\u30d7\u306b\u6163\u308c\u308b\u305f\u3081\u306b\u3082\u3001\u30d1\u30bf\u30fc\u30f3\u3054\u3068\u306b\u554f\u984c\u7df4\u7fd2\u3092\u3057\u3066\u3044\u304f\u306e\u304c\u304a\u3059\u3059\u3081\u3067\u3059\u3002<\/p>\n

    \u3082\u3057\u3001\u81ea\u5206\u3067\u554f\u984c\u3092\u89e3\u3044\u3066\u3044\u3066\u300c\u306a\u3093\u3068\u306a\u304f\u308f\u304b\u3063\u305f\u3064\u3082\u308a\u300d\u3067\u7d42\u308f\u3063\u3066\u3057\u307e\u3063\u305f\u308a\u3001\u300c\u306a\u305c\u3053\u306e\u7b54\u3048\u306b\u306a\u308b\u306e\u304b\u300d\u304c\u30e2\u30e4\u30e2\u30e4\u3057\u305f\u307e\u307e\u3060\u3063\u305f\u308a\u3059\u308b\u5834\u5408\u306f\u3001\u8ab0\u304b\u306b\u76f8\u8ac7\u3057\u3066\u307f\u308b\u306e\u3082\u4e00\u3064\u306e\u65b9\u6cd5\u3067\u3059\u3002\u5b66\u6821\u306e\u5148\u751f\u3084\u53cb\u9054\u306b\u805e\u3044\u3066\u307f\u308b\u306e\u306f\u3082\u3061\u308d\u3093\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u5bb6\u5ead\u6559\u5e2b\u306a\u3069\u5c02\u9580\u306e\u30b5\u30dd\u30fc\u30c8\u3092\u53d7\u3051\u3066\u307f\u308b\u306e\u3082\u3088\u3044\u3067\u3057\u3087\u3046\u3002\u7279\u306b\u6587\u7ae0\u984c\u306f\u3001\u7b54\u3048\u3060\u3051\u898b\u3066\u3082\u306a\u304b\u306a\u304b\u7406\u89e3\u3057\u306b\u304f\u3044\u3053\u3068\u304c\u591a\u3044\u306e\u3067\u3001\u300c\u306a\u305c\u305d\u3046\u306a\u308b\u306e\u304b\u300d\u3092\u4e01\u5be7\u306b\u8aac\u660e\u3057\u3066\u3082\u3089\u3048\u308b\u3068\u3001\u5927\u304d\u306a\u52a9\u3051\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

    a = a = \u5909\u5316\u306e\u5272\u5408 = y\u306e\u5897\u52a0\u91cf x\u00f74 \u00f7 \uff12=\uff12 \u9023\u7acb\u65b9\u7a0b\u5f0f\u3068\u4e00\u6b21\u95a2\u6570\u306f\u3001\u4e2d\u5b662\u5e74\u751f\u3067\u5b66\u3076\u6570\u5b66\u306e\u4e2d\u3067\u3082\u7279\u306b\u5927\u5207\u306a\u5358\u5143\u3067\u3059\u3002\u3053\u306e2\u3064\u3092\u3057\u3063\u304b\u308a\u7406\u89e3\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u4e2d1\u3067\u5b66\u3093\u3060\u300c\u6b63\u8ca0\u306e\u6570\u300d\u300c\u6587\u5b57\u5f0f\u300d\u300c\u65b9\u7a0b\u5f0f\u300d\u306a\u3069 […]<\/p>\n","protected":false},"author":9,"featured_media":6928,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[33],"tags":[],"class_list":{"0":"post-7581","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-point"},"_links":{"self":[{"href":"https:\/\/www.aphex-group.com\/blog\/wp-json\/wp\/v2\/posts\/7581","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.aphex-group.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.aphex-group.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.aphex-group.com\/blog\/wp-json\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"https:\/\/www.aphex-group.com\/blog\/wp-json\/wp\/v2\/comments?post=7581"}],"version-history":[{"count":63,"href":"https:\/\/www.aphex-group.com\/blog\/wp-json\/wp\/v2\/posts\/7581\/revisions"}],"predecessor-version":[{"id":7777,"href":"https:\/\/www.aphex-group.com\/blog\/wp-json\/wp\/v2\/posts\/7581\/revisions\/7777"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.aphex-group.com\/blog\/wp-json\/wp\/v2\/media\/6928"}],"wp:attachment":[{"href":"https:\/\/www.aphex-group.com\/blog\/wp-json\/wp\/v2\/media?parent=7581"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.aphex-group.com\/blog\/wp-json\/wp\/v2\/categories?post=7581"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.aphex-group.com\/blog\/wp-json\/wp\/v2\/tags?post=7581"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}