C
分析:根據(jù)函數(shù)中k>0時,可得反比例函數(shù)圖象位于一、三象限,一次函數(shù)圖象經(jīng)過一、三、四象限,再根據(jù)函數(shù)中k<0時,反比例函數(shù)圖象位于二、四象限,一次函數(shù)圖象經(jīng)過二、三、四象限,可得答案.
解答:當(dāng)k>0時,反比例函數(shù)圖象位于一、三象限,一次函數(shù)圖象經(jīng)過一、三、四象限,
當(dāng)k<0時,反比例函數(shù)圖象位于二、四象限,一次函數(shù)圖象經(jīng)過二、三、四象限,
故選:C.
點評:本題考查了函數(shù)圖象,k<0,反比例函數(shù)圖象是雙曲線,位于二、四象限,k<0,b=-3<0,一次函數(shù)圖象是一條直線,經(jīng)過二、三、四象限.