如图,
中,顶点
的坐标是
,
轴,
交
轴于点
,顶点
的纵坐标是
,
的面积是
.反比例函数
的图象经过点
和
,求反比例函数的表达式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a076f1207c62e6593e55d98e9184ed53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0133f17b9110f1e2dfc0403162aaa95f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3edbd40e04e2a943051fa83d6e511add.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a950cfbee3bbdf00a2d1ed1aa5f2021d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffeb74590d0f54cc10f763c23b3d4744.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://img.xkw.com/dksih/QBM/2020/2/23/2405074828877824/2405267829161985/STEM/bbdb1046-95ca-4002-a639-a114242c8c06.png)
更新时间:2020-02-23 16:32:50
|
【知识点】 反比例函数与几何综合解读
相似题推荐
解答题-问答题
|
适中
(0.65)
解题方法
【推荐1】如图,点
是直线
与反比例函数
图象的两个交点,
轴,垂足为点
已知
,连接
.
![](https://img.xkw.com/dksih/QBM/2020/7/3/2498018486190080/2499123005128704/STEM/b07b54959d5e480a9965f2d52ef8383b.png?resizew=210)
求反比例函数和直线
的表达式:
和
的面积分别为
求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0317517af4a7c1a16c8abeade5e75be3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d043283b5219840473d7efdf1ea6c0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2241bd71e0c20867029e489f9ba655d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44f7606459554b3a362dd12f9f7faec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bdfbae913ff7ff8caaefcaacf8c20ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9b857e5c0d239753c1824234c71b74b.png)
![](https://img.xkw.com/dksih/QBM/2020/7/3/2498018486190080/2499123005128704/STEM/b07b54959d5e480a9965f2d52ef8383b.png?resizew=210)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf6c84731e5e1bd335ecfc2d36c3d81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9cafba38e83bc3e4f76785f374211ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0386ef30475321ff3d7d4364accf3fb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16ae89bd2dd0a18e1afb5b1a1abd0efd.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】如图,直线y=x与双曲线y=
(k>0,x>0)交于点P,PA⊥x轴于点A,S△PAO=![](https://img.xkw.com/dksih/QBM/2016/4/21/1574196378722304/1574196384669696/STEM/b89c5df2f0ca4ab9ab78943db02c5191.png)
![](https://img.xkw.com/dksih/QBM/2016/4/21/1574196378722304/1574196384669696/STEM/e448b2b2a02b42f3afe713ba894220ad.png)
(1)k= 点P的坐标为 ;
(2)如图1,点E的坐标为(0,﹣1),连接PE,过点P作PF⊥PE,交x轴于点F,求点F的坐标;
(3)如图2,将点A向右平移5个单位长度得点M,Q为双曲线y=
(x>0)上一点且满足S△QPO=S△MPO,求点Q的坐标;
(4)将△PAO绕点P逆时针旋转一个角α(0°<α<180°),记旋转中的△PAO为△PA′O′设直线PO′、直线A′O′与x轴分别交于点G、H,是否存在这样的旋转角α,使得△GHO′为等腰三角形?若存在,直接写出α;若不存在,请说明理由.
![](https://img.xkw.com/dksih/QBM/2016/4/21/1574196378722304/1574196384669696/STEM/0d5fc196ee49434ab2e3d2d9251df33d.png)
![](https://img.xkw.com/dksih/QBM/2016/4/21/1574196378722304/1574196384669696/STEM/b89c5df2f0ca4ab9ab78943db02c5191.png)
![](https://img.xkw.com/dksih/QBM/2016/4/21/1574196378722304/1574196384669696/STEM/e448b2b2a02b42f3afe713ba894220ad.png)
(1)k= 点P的坐标为 ;
(2)如图1,点E的坐标为(0,﹣1),连接PE,过点P作PF⊥PE,交x轴于点F,求点F的坐标;
(3)如图2,将点A向右平移5个单位长度得点M,Q为双曲线y=
![](https://img.xkw.com/dksih/QBM/2016/4/21/1574196378722304/1574196384669696/STEM/15342b2f609146b4bafb0f3ebdcb6bfd.png)
(4)将△PAO绕点P逆时针旋转一个角α(0°<α<180°),记旋转中的△PAO为△PA′O′设直线PO′、直线A′O′与x轴分别交于点G、H,是否存在这样的旋转角α,使得△GHO′为等腰三角形?若存在,直接写出α;若不存在,请说明理由.
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