已知：如图，在平面直角坐标系中，直线AB分别与轴交于点B、A，与

已知：如图，在平面直角坐标系中，直线AB分别与轴交于点B、A，与反比例函数的图象分别交于点C、D，轴于点E，．
(1). 求该反比例函数的解析式；
(2). （4分）求直线AB的解析式

解：（1），．
轴于点．
，．··································································· （1分）
点的坐标为．··················································································· （2分）
设反比例函数的解析式为．
将点的坐标代入，得，
．··········································································································· （3分）
该反比例函数的解析式为．··································································· （4分）
2，．························································································ （5分）
，
，．························································································ （6分）
设直线的解析式为．
将点的坐标分别代入，得
解得······································································································· （7分）
       直线的解析式为． …………（8分）解析:
略