Question

已知：如圖，在平面直角坐標系中，直線AB分別與軸交于點B、A，與反比例函數的圖象分別交于點C、D，軸于點E，．
(1). 求該反比例函數的解析式；
(2). （4分）求直線AB的解析式

Answer 1

解：（1），．
軸于點．
，．··································································· （1分）
點的坐標為．··················································································· （2分）
設反比例函數的解析式為．
將點的坐標代入，得，
．··········································································································· （3分）
該反比例函數的解析式為．··································································· （4分）
2，．························································································ （5分）
，
，．························································································ （6分）
設直線的解析式為．
將點的坐標分別代入，得
解得······································································································· （7分）
       直線的解析式為． …………（8分）解析:
略