名校
1 . 如图,在平面直角坐标系中,一次函数
的图象与反比例函数
的图象的两个交点为
和
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/13/2a10a30b-fb4d-456f-b171-d2c390cdca51.png?resizew=162)
(1)求反比例函数的关系式;
(2)若一次函数
与
轴交于点
,且
;
①求出
与
的值;
②直接写出不等式
的解集为__________;
(3)若点
是直线
上一点,
点的横坐标为
,连接
,
,
的面积记为
,当
时,请直接写出
值__________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0c143e0781facdd4e4b6db9854e0ad2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb79a1b0c6dc78e6de17de6bed477fb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c80eabaf101288433b3b9e92a4805a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/13/2a10a30b-fb4d-456f-b171-d2c390cdca51.png?resizew=162)
(1)求反比例函数的关系式;
(2)若一次函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0c143e0781facdd4e4b6db9854e0ad2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8be701c3fbb97524b969e9c85b80bce.png)
①求出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
②直接写出不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/238aa46d89c03bd1c044924e95f282dd.png)
(3)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/004104bafb5f30338123d4ea2b7fedde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd08ea81c6db2ca24f3af86d4809991.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2 . 如图,一次函数y=kx+b(k、b为常数,k≠0)的图象与x轴、y轴分别交于A、B两点,且与反比例函数
(m为常数且m≠0)的图象在第二象限交于点C,CD⊥x轴,垂足为D,若OB=2OA=3OD=6.
(1)求一次函数与反比例函数的解析式;
(2)求△COE的面积;
(3)请观察图象,直接写出不等式kx+b
的解集.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05621b18b7ffc991d9f30380e2e08fea.png)
(1)求一次函数与反比例函数的解析式;
(2)求△COE的面积;
(3)请观察图象,直接写出不等式kx+b
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/656479608e9bc53a3fc7360274ff569d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/3/53c09df0-1300-4407-811d-0b94d8679549.png?resizew=185)
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3 . 小明在学习中遇到这样一个问题.如图,已知线段AC=2cm,AB=6cm,点P是线段AB上由点A向点B移动的一动点(不与点A,B重合),连接CP,过点B作BD∥AC交射线CP于点D.当BD<2AP时,求AP长度的取值范围.
小明尝试结合学习函数的经验解决此问题.请将下面的探究过程补充完整:
![](https://img.xkw.com/dksih/QBM/2022/3/7/2931332919115776/2938910366826496/STEM/c8e438cf-5b92-4516-ae7c-5927ec947981.png?resizew=133)
![](https://img.xkw.com/dksih/QBM/2022/3/7/2931332919115776/2938910366826496/STEM/5fe47262-bcd2-4eda-9bfa-06c78e1ec963.png?resizew=307)
(1)设AP=xcm,BD=ycm,用含x的代数式表示y: ,其中自变量x的取值范围为 .
(2)x,y的几组对应值如表所示.
请你根据表的数据,在如图所示的平面直角坐标系中,通过描点、连线,画出y与x的函数图象.
(3)结合画出的函数图象,解决问题:当BD<2AP时,AP的取值范围为 .
小明尝试结合学习函数的经验解决此问题.请将下面的探究过程补充完整:
![](https://img.xkw.com/dksih/QBM/2022/3/7/2931332919115776/2938910366826496/STEM/c8e438cf-5b92-4516-ae7c-5927ec947981.png?resizew=133)
![](https://img.xkw.com/dksih/QBM/2022/3/7/2931332919115776/2938910366826496/STEM/5fe47262-bcd2-4eda-9bfa-06c78e1ec963.png?resizew=307)
(1)设AP=xcm,BD=ycm,用含x的代数式表示y: ,其中自变量x的取值范围为 .
(2)x,y的几组对应值如表所示.
x/cm | 1 | 2 | 3 | 4 | 5 | 6 |
y/cm | 10 | 4 | 2 | 1 | 0.4 | 0 |
(3)结合画出的函数图象,解决问题:当BD<2AP时,AP的取值范围为 .
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4 . 如图,点
是坐标原点,点
是反比例函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/498bcfd1aac03057dcd0adef2dd113a3.png)
图像上一点,点
在
轴上,
,四边形
是平行四边形,
交反比例函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/498bcfd1aac03057dcd0adef2dd113a3.png)
图像于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/28/3e19a40b-9248-496e-8799-d7c31dea5c68.png?resizew=169)
(1)平行四边形
的面积等于______;
(2)设
点横坐标为
,试用
表示点
的坐标;(要有推理和计算过程)
(3)求
的值;
(4)求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/498bcfd1aac03057dcd0adef2dd113a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab03556c333ab0b55fe86c937b2a5763.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ff29971ccc633d89832ffa9bd54afa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/498bcfd1aac03057dcd0adef2dd113a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab03556c333ab0b55fe86c937b2a5763.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/28/3e19a40b-9248-496e-8799-d7c31dea5c68.png?resizew=169)
(1)平行四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ea7cb5eb47350e91d73316dad745067.png)
(4)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccaee8f228ff24e7c89879bb5b999cf2.png)
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2020-06-28更新
|
573次组卷
|
2卷引用:2020年江苏省靖江市九年级中考适应性考试数学试题
18-19九年级·浙江杭州·
5 . 如图,在矩形
中,
,
是
上的一个动点(不包括点
),以点
为圆心,
为半径的半圆交射线
于点
,连结
,过点
作
交半圆
于
,连结
,设
,
.
![](https://img.xkw.com/dksih/QBM/2020/6/5/2478098129559552/2478128926810112/STEM/c7d8b374aceb4ea49dedfd38b0ada3b9.png?resizew=320)
(1)求证:
.
(2)若
,
是以
为直角边的直角三角形,求
的值.
(3)点
运动到使得
的值最小时.
①若
时,求
值;
②当
是
的三等分点时,直接写出
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1642eec556eb252de9c1ab7bb5ca90b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe04aebffe0143155af4ecb60c06d0b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2633a6f46b0847158eebb05c743561aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0f6916dda37517e10bba4ce71efe7b0.png)
![](https://img.xkw.com/dksih/QBM/2020/6/5/2478098129559552/2478128926810112/STEM/c7d8b374aceb4ea49dedfd38b0ada3b9.png?resizew=320)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0204f6695d8d71c6d6d50b464faa0aab.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55aa0a20848c37c1892c567b2315e04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f8305e23d5378f1cbf5518256a37c9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0e57a13c665af88f326c9890072bf73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
(3)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42847fd4c1e37f1338c84852bd122fb1.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2f3fa679bb55ded25a9b72a8e788cb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b88584cf1df43e28d03592c7998b1653.png)
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