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関数

Posted at

🔹 基本の用語説明

● 横軸(x軸)とは?

  • グラフの 横方向 に引かれている線。
  • 通常、「変化させる値」(例えば時間、距離など)を置く。
  • x座標とも言う。

● 縦軸(y軸)とは?

  • グラフの 縦方向 に引かれている線。
  • 「求めたい値」や「結果の値」を置くことが多い。
  • y座標とも言う。

🔹 関数とは?

ある値(x)を入れると、それに対応して別の値(y)が決まるルール(対応関係)

中学受験では、式や表、グラフで表されます。


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