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歡迎您訪問數學考題練習:請寫出一個圖象在第二、第四象限的反比例函數解析!

數學考題練習:請寫出一個圖象在第二、第四象限的反比例函數解析

更新時間:2024-01-12 16:46:27作者:貝語網校

請寫出一個圖象在第二、第四象限的反比例函數解析式,你所寫的函數解析式是________.

試題答案

y=-(答案不唯一)

試題解析

根據反比例函數y=(k≠0)的性質可知,反比例函數過二、四象限則比例系數k為負數,據此即可寫出函數解析式.

解答:由于反比例函數圖象經過二、四象限,

所以比例系數為負數,

故解析式可以為y=-(答案不唯一).

故答案為:y=-(答案不唯一).

點評:本題考查了反比例函數的性質.對于反比例函數(k≠0),(1)k>0,反比例函數圖象在一、三象限;(2)k<0,反比例函數圖象在第二、四象限內.

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