综合与探究
如图,在平面直角坐标系中,直线
与
轴,
轴分别交于点
,
,直线
与
轴,
轴分别交于点
,
,两条直线交于点
,且点
的横坐标为
;连接
.
的函数解析式;
(2)求
的面积;
(3)若点
在直线
上,
为坐标平面内任意一点,试探究:是否存在以点
,
,
,
为顶点的四边形是矩形?若存在,请直接写出点
的坐标;若不存在,请说明理由.
如图,在平面直角坐标系中,直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c1e6043df5ef7c948946ef56eca4b1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a01e2e3d40112fdeeb464f81eaac1c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a77cb0a28d72b7e7eacc877e97bc7ff7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7294f5ae2a24ff42e84cd9773b2a7287.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
(3)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
22-23八年级下·山西吕梁·期末 查看更多[4]
山西省吕梁市交口县2022-2023学年八年级下学期期末数学试题山西省吕梁市吕梁市三校、离石区六校2022-2023学年八年级下学期6月期末数学试题 山东省济南市市中区2023-2024学年九年级上学期开学数学试题(已下线)专题19.18 一次函数与方程、不等式(分层练习)(提升练)-2023-2024学年八年级数学下册基础知识专项突破讲与练(人教版)
更新时间:2023-07-12 11:33:52
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解答题-作图题
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适中
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名校
【推荐1】已知反比例函数
图像与一次函数
的图像的一个交点
,另一个交点为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/20/38193536-9412-4949-826e-ef8c1574adf5.png?resizew=386)
(1)求反比例函数和一次函数的解析式,并在坐标系中画出这两个函数的图像;
(2)求
的面积;
(3)根据图像,直接写出不等式
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef9143762193811f6a9fa8c15c8bbd90.png)
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(1)求反比例函数和一次函数的解析式,并在坐标系中画出这两个函数的图像;
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
(3)根据图像,直接写出不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df86b0da538701c08fb214608e062372.png)
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解答题-问答题
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【推荐2】一次函数的图象经过点A(2,4)和B(﹣1,﹣5)两点.
(1)求出该一次函数的表达式;
(2)判断(﹣5,﹣4)是否在这个函数的图象上?
(1)求出该一次函数的表达式;
(2)判断(﹣5,﹣4)是否在这个函数的图象上?
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解答题-问答题
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【推荐1】如图,已知
是一次函数
的图象和反比例函数
图象的两个交点,直线
与x轴和y轴的交点分别为C、D.
![](https://img.xkw.com/dksih/QBM/2021/12/3/2864740026015744/2896876828442624/STEM/b067ddaa-d999-4ba1-a1dd-df8d0c268088.png?resizew=143)
(1)求反比例函数和一次函数的解析式;
(2)求不等式
的解集(请直接写出答案);
(3)若y轴上有一动点P,使得
的面积为18,求P点的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1226ec6d0204b6c2313fcfc3da891f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15fb18163df0690365a0d2e7ee88f5a.png)
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(1)求反比例函数和一次函数的解析式;
(2)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2e7a7aff4e7663a7e3228018a1db665.png)
(3)若y轴上有一动点P,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
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【推荐2】如图,已知
,
两点在一次函数
的图象上,并且直线交x轴于点C,交y轴于点D.
求出C,D两点的坐标;
求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46d686fcccc0d5811845506d22ef63e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f64ba1f7d207916206649ed00d3a03c2.png)
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解答题-问答题
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【推荐1】机器人“海宝”在某圆形区域表演“按指令行走”,如图所示,“海宝”从圆心O出发,先沿北偏西67.4°方向行走13米至点A处,再沿正南方向行走14米至点B处,最后沿正东方向行走至点C处,点B、C都在圆O上.(本题参考数据:sin67.4°=
,cos67.4°=
,tan67.4°=
)
(1)求弦BC的长;
(2)请判断点A和圆的位置关系,试说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5756451881af4d6594c820652ebcc2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/954795d1842974a705f9468f3b952ab1.png)
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![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/14/b1e680b5-6d35-4218-96dc-df67862447c5.png?resizew=268)
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解答题-证明题
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【推荐1】如图,四边形ABCD,对角线AC,BD相交于点O.
,
,E是BC上一点,连接AE交BD于点F,连接DE.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/20/2b393979-3844-4072-a9f5-57b3baabf6c2.png?resizew=552)
(1)求证:四边形ABCD是平行四边形;
(2)若
,
,求证:
.
(3)在(2)的条件下,直接写出
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b37bee4a8ce3a408c1cab911b469a513.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b9ea68dbddf33f0fed8f35a1fd5c90b.png)
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(1)求证:四边形ABCD是平行四边形;
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b0c5831ef882a341e1586deeacf5b74.png)
(3)在(2)的条件下,直接写出
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解答题-问答题
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【推荐2】如图,为了测量某山
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的高度(结果保留根号).
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