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歡迎您訪問數(shù)學(xué)考題練習(xí):下列4個點,不在反比例函數(shù)y=-圖象上的是!

數(shù)學(xué)考題練習(xí):下列4個點,不在反比例函數(shù)y=-圖象上的是

更新時間:2024-01-12 16:35:18作者:貝語網(wǎng)校

下列4個點,不在反比例函數(shù)y=-圖象上的是

A.(2,-3)

B.(-3,2)

C.(3,-2)

D.(3,2)

試題答案

D

試題解析

根據(jù)y=-得k=xy=-6,所以只要點的橫坐標與縱坐標的積等于-6,就在函數(shù)圖象上.

解答:原式可化為:xy=-6,

A、2×(-3)=-6,符合條件;

B、(-3)×2=-6,符合條件;

C、3×(-2)=-6,符合條件;

D、3×2=6,不符合條件.

故選D.

點評:本題主要考查反比例函數(shù)圖象上點的坐標特征,所有在反比例函數(shù)上的點的橫縱坐標的積應(yīng)等于比例系數(shù).

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