如图7,已知直线与x轴、y轴分别交于点A、B,与双曲线(x<0)分别

如图7,已知直线x轴、y轴分别交于点AB,与双曲线x<0)分别交于点CD,且C点的坐标为(2).

1)分别求出直线AB及双曲线的表达式;

2)求出点D的坐标;

3)利用图象直接写出:当x在什么范围内取值时,

 


答案

1 2)(-21

3)-2<-1

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