1 . 已知反比例函数
,当
时,y=__________ ;当y=2时,x=__________ ;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5c5dbbd1a7f9932567099ee67f2443f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/224d30ca84f1aeeeda7a718e751a4925.png)
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2 . 已知y是x的反比例函数,且当
时,
.
(1)求y关于x的函数解析式;
(2)当
时,求y值;
(3)当
时,求x值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d324b8cc99df14a6418e7d0f7b7d7436.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8d059affa3da30ff5b2e8f1c1ceb6ef.png)
(1)求y关于x的函数解析式;
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db4f3ea707431e69ce7f67f20b09c5ae.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6618612cbec37e01b9e71521de70e783.png)
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