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歡迎您訪問數(shù)學(xué)考題練習(xí):已知直線y=k1x與雙曲線y=有一交點為(-2!

數(shù)學(xué)考題練習(xí):已知直線y=k1x與雙曲線y=有一交點為(-2

更新時間:2024-01-12 16:25:33作者:貝語網(wǎng)校

已知直線y=k1x與雙曲線y=有一交點為(-2,4),則另一交點坐標(biāo)是________.

試題答案

(2,-4)

試題解析

比例函數(shù)的圖象是中心對稱圖形,則經(jīng)過原點的直線的兩個交點一定關(guān)于原點對稱.

解答:設(shè)直線y=k1x與雙曲線y=交于A、B兩點,

∵點A與B關(guān)于原點對稱,A(-2,4),

∴B點的坐標(biāo)為(2,-4).

故答案為:(2,-4).

點評:本題主要考查反比例函數(shù)與一次函數(shù)的交點問題的知識點,反比例函數(shù)圖象的中心對稱性,要求同學(xué)們要熟練掌握.

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