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每日一練:點P(-4,5)關于x軸對稱的點的坐標為

更新時間:2024-01-12 12:52:11作者:貝語網校

點P(-4,5)關于x軸對稱的點的坐標為

A.(4,5)

B.(-4,-5)

C.(5,-4)

D.(4,-5)

試題答案

B

試題解析

分析:根據“關于x軸對稱的點,橫坐標相同,縱坐標互為相反數”解答.

解答:點P(-4,5)關于x軸對稱的點的坐標為(-4,-5).故選B.

點評:本題考查了關于x軸、y軸對稱的點的坐標,解決本題的關鍵是掌握好對稱點的坐標規律:(1)關于x軸對稱的點,橫坐標相同,縱坐標互為相反數;

(2)關于y軸對稱的點,縱坐標相同,橫坐標互為相反數;

(3)關于原點對稱的點,橫坐標與縱坐標都互為相反數.

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