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歡迎您訪問數(shù)學考題練習:點M(a-1,a-3)在y軸上,則a=!

數(shù)學考題練習:點M(a-1,a-3)在y軸上,則a=

更新時間:2024-01-12 16:28:23作者:貝語網(wǎng)校

點M(a-1,a-3)在y軸上,則a=

A.-1

B.-3

C.1

D.3

試題答案

C

試題解析

點在y軸上,其橫坐標是0,列式就能求到a的值.

解答:∵點M(a-1,a-3)在y軸,

∴a-1=0,

解得a=1.

故選C.

點評:本題主要考查了點在y軸上時點的橫坐標為0的特點.

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