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歡迎您訪問數學考題練習:正比例函數y=kx的圖象與反比例函數y=的圖象!

數學考題練習:正比例函數y=kx的圖象與反比例函數y=的圖象

更新時間:2024-01-12 16:42:54作者:貝語網校

正比例函數y=kx的圖象與反比例函數y=的圖象上一個交點是(-2,1),那么它們的另一個交點是________.

試題答案

(2,-1)

試題解析

根據直線y=kx與雙曲線y=的上點均關于原點對稱解答.

解答:因為一個交點的坐標為(-2,1),所以它們的另一個交點的坐標一定關于原點與此的點對稱,

即另一個交點坐標為(2,-1).

故答案為(2,-1).

點評:此題考查的是雙曲線上點的坐標特征,即雙曲線上的點關于原點對稱.

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