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歡迎您訪問數學考題練習:反比例函數y=(k≠0)的圖象如圖所示,若點A!

數學考題練習:反比例函數y=(k≠0)的圖象如圖所示,若點A

更新時間:2024-01-12 16:37:25作者:貝語網校

反比例函數y=(k≠0)的圖象如圖所示,若點A(x1,y1)、B(x2,y2)、C(x3,y3)是這個函數圖象上的三點,且x1>x2>0>x3,則y1、y2、y3的大小關系

A.y3<y1<y2

B.y2<y1<y3

C.y3<y2<y1

D.y1<y2<y3

試題答案

B

試題解析

由反比例函數圖象可知,當x<0或x>0時,y隨x的增大而增大,由此進行判斷.

解答:由反比例函數的增減性可知,當x>0時,y隨x的增大而增大,

∴當x1>x2>0時,則0>y1>y2,

又C(x3,y3)在第二象限,y3>0,

∴y2<y1<y3,故選B.

點評:本題考查了反比例函數圖象上點的坐標特點.關鍵是根據反比例函數的增減性解題.

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