如图,正比例函数
(
)的图像与反比例函数
(
)的图像交于点
,且点
在反比例函数的图像上,点
的坐标为
.
(1)求正比例函数
的解析式;
(2)若
为射线
上一点,①若点
的横坐标为
,
的面积为
,写出
关于
的函数解析式,并指出自变量
的取值范围;②当
是等腰三角形时,求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/766bc42b7ead98238a339bb4dc42bb51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1326c3aac61397f6be2d46bfbb8fe917.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb79a1b0c6dc78e6de17de6bed477fb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f494e4db0034036232b9857b95ca8cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b9ddeb42924ac420ffa745bf67c4607.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6673a20329f380abe0e6144aba0f53e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2054a65d5ffb250b0de52893a226d3c4.png)
(1)求正比例函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/766bc42b7ead98238a339bb4dc42bb51.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fa21f37648639334064d1f78e7654e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90caf421cac864efc3fec760a1296c85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/2018/1/2/1851628301033472/1853282705670144/STEM/fda97314-4f6a-40d9-9e2c-97ef6804112e.png?resizew=153)
16-17八年级上·上海·期末 查看更多[3]
上海市廊下中学2016-2017学年度第一学期八年级期末考试试题(已下线)第18章 正比例函数和反比例函数(压轴题专练)-2021-2022学年八年级数学上学期期中期末考试满分全攻略(沪教版)(已下线)上海期中解答题精选50题(压轴版)-2021-2022学年八年级数学上学期期中期末考试满分全攻略(沪教版)
更新时间:2018-01-04 19:36:13
|
【知识点】 反比例函数与一次函数的综合解读
相似题推荐
解答题-问答题
|
较难
(0.4)
名校
【推荐1】如图,在平面直角坐标系中,直线
和双曲线
在第一象限相交于点
,过点A作
轴,垂足为点B.有一动点P从原点出发沿y轴以每秒1个单位的速度向y轴的正方向运动,运动时间为t秒
,过点P作
轴,交直线
于点C,交双曲线于点D.
![](https://img.xkw.com/dksih/QBM/2021/12/6/2866906933256192/2872888065900544/STEM/8940d6db-b374-47ab-83c0-600cbc4ea2dc.png?resizew=407)
(1)求直线
和双曲线
的函数解析式;
(2)设四边形
的面积为S,当P在线段
上运动时(P不与B点重合),求S与t之间的函数关系式;
(3)在图中第一象限的双曲线上是否存在点D,使以
四点为顶点的四边形是平行四边形?若存在,请直接写出此时t的值和D点的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/766bc42b7ead98238a339bb4dc42bb51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb79a1b0c6dc78e6de17de6bed477fb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1dab74e16403e8131f9f5b2a74f3a84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2ea84cba8ccd585ad1da1fd204bc3e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a363df9127fb019f87ec53470c50dcc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e054e81ff6a6b94faa83218ca7c8fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://img.xkw.com/dksih/QBM/2021/12/6/2866906933256192/2872888065900544/STEM/8940d6db-b374-47ab-83c0-600cbc4ea2dc.png?resizew=407)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/766bc42b7ead98238a339bb4dc42bb51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb79a1b0c6dc78e6de17de6bed477fb1.png)
(2)设四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9523c16aef86861419d7b8399874365.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
(3)在图中第一象限的双曲线上是否存在点D,使以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c82a10b4f0c9323d726804c89dd9548.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐2】如图,直线
与x轴交于点A,与y轴交于点B,设反比例函数表达式为
.解答下列问题:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/4/87585932-7d55-47f0-a88c-0557db4e99d5.png?resizew=409)
(1)求点A、点B的坐标.
(2)当直线
与反比例函数图象有唯一公共点P时,求k的值,并判断
与
的数量关系.
(3)已知一次函数
的图像与反比例函数
的图像交于E,F两点,
,求k的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5cc0e44baeedd8dd7df21a85cca70d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d49d34012ddf68fb981eb4975ac99b9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/4/87585932-7d55-47f0-a88c-0557db4e99d5.png?resizew=409)
(1)求点A、点B的坐标.
(2)当直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5cc0e44baeedd8dd7df21a85cca70d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
(3)已知一次函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1882d2f789de61b5b7e3ec952e13b99e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b0b612460326448de36e160c8d29af9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df9c1cff293c7abd598d0a5953e1de87.png)
您最近一年使用:0次