真题
1 . 在平面直角坐标系中,已知抛物线
与x轴交于点
和点B,与y轴交于点
.
(2)P是抛物线上一动点(不与点A,B,C重合),作
轴,垂足为D,连接
.
①如图,若点P在第三象限,且
,求点P的坐标;
②直线
交直线
于点E,当点E关于直线
的对称点
落在y轴上时,请直接写出四边形
的周长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fae87d5b04b164e7f976e7e0093bf27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8748dc55e2f45bc37fc4d84d7310f79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f0ec7f84f716a316ec92d133927666c.png)
(2)P是抛物线上一动点(不与点A,B,C重合),作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f00d0ff8dd38da17167cf9b789eec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
①如图,若点P在第三象限,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987dc0411d7c651c01b4e33ada81a6b8.png)
②直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3b1a5427d8ff23df0f3ec194756c84c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b8f867585218c21799b36537147e33c.png)
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2 . 如图,在平面直觓坐标系
中,拋物线
的顶点为
,交
轴于点
,点
是拋物线上一点.
的坐标.
(2)当
时,求二次函数
的最大值与最小值的差.
(3)若点
是
轴上方抛物线上的点(不与点
重合),设点
的横坐标为
,过点
作
轴,交直线
于点
,当线段
的长随
的增大而增大时,请直接写出
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58d88bbd34102b55fa928e8ff83f0d52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39698959ba7b4d735e0121144427cfb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2e60f98107a82434d300b04c0cc72b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f22c4898e2a23e0e888b69d79719f6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58d88bbd34102b55fa928e8ff83f0d52.png)
(3)若点
![](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/a65183d238c9bc2be73770717d890683.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24f27083267432a9352fb6677a07d461.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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2023-06-23更新
|
329次组卷
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4卷引用:新疆维吾尔自治区乌鲁木齐市2023-2024学年九年级上学期期末数学试题
名校
3 . 如图,在矩形ABCD中,
,
,P是
上一个动点,过点P作
,垂足为G,连接
,取
中点E,连接
,则线段
的最小值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40560ea08d6cd8c1d4d9661ee6faaa3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43617dd983cb9daea86aa3c0525fc82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbe16a90567bc8adf43d50ae8b0536cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e55e398e8520d8a36fb5a625a085b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e55e398e8520d8a36fb5a625a085b8.png)
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2023-05-20更新
|
465次组卷
|
13卷引用:2023年新疆乌鲁木齐市沙依巴克区中考数学适应性试题
2023年新疆乌鲁木齐市沙依巴克区中考数学适应性试题2023年江苏省苏州市吴中、吴江、相城区九年级数学第一次调研试题(已下线)2023年江苏省苏州市吴中、吴江、相城区九年级数学第一次调研试题变式题16-20题(已下线)黄金卷06-【赢在中考·黄金8卷】备战2023年中考数学全真模拟卷(江苏徐州专用)安徽省六安市十校联盟2022--2023学年九年级下学期第一次月考数学试卷浙江省宁波市北仑区宁波联合实验中学2022-2023学年八年级下学期期中数学试题2023年福建省福州市第十九中学中考二模数学试卷(5月)2023年山东省淄博市桓台县中考二模数学试题2023年江苏省苏州市吴江区中考一模数学试题(已下线)2023年福建二模(几何综合)江苏省连云港市西苑中学2022-2023学年九年级下学期3月月考数学试题江苏省苏州市2024年九年级数学中考模拟预测题(已下线)第5章 特殊平行四边形压轴(7个考点40题专练)-2023-2024学年八年级数学下学期考试满分全攻略高频考点+重难点讲练与测试(浙教版)
4 . 如图是一块铁皮余料,将其放置在平面直角坐标系中,底部边缘
在x轴上,且
,外轮廓线是抛物线的一部分,对称轴为y轴,高度
.现计划将此余料进行切割:
(2)若切割成正方形,要求一边在底部边缘
上且面积最大,求此正方形的面积;
(3)若切割成矩形,要求一边在底部边缘
上且周长最大,求此矩形的周长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d48ed33945cc85c834deb7c8a02df7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1650ff5e4f42b77e1d6d9edfef95b2d2.png)
(2)若切割成正方形,要求一边在底部边缘
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(3)若切割成矩形,要求一边在底部边缘
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
名校
5 . 在平面直角坐标系
中,抛物线
与
轴交于A,B两点,与
轴的正半轴交于点C,已知点
,
.
(1)求抛物线的解析式;
(2)抛物线过点
,
,且
,求
的范围;
(3)若此抛物线的对称轴上的点P满足
,求点P的坐标;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07764b5b2d71e745d986d9dc007a37f8.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/a8748dc55e2f45bc37fc4d84d7310f79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49c8dbc31b2e14067ef2f34b4e25f114.png)
(1)求抛物线的解析式;
(2)抛物线过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ec354943d2591023f186f57533470d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8ed036dbb246db21d427b1841ed338c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f99df1a7b58018125b99578b779342.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
(3)若此抛物线的对称轴上的点P满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81be6e1b3a2d4b1e8283b1a6754f0296.png)
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2023-04-04更新
|
347次组卷
|
2卷引用:2023年新疆乌鲁木齐市第六十八中学中考第一次模拟考试数学试题
6 . 如图,在平面直角坐标系中放置一直角三角板,其顶点为
,
,
,将此三角板绕原点
逆时针旋转
,得到
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/1/27390e3b-5874-4526-8bdf-eb9aa8c61cc8.png?resizew=421)
(1)有一条抛物线经过点
,
,
,求该抛物线的解析式.
(2)设该抛物线的一个动点
的横坐标为
.
①当
时,求四边形
的面积
与
的函数关系式,并求出
的最大值;
②点
是直线
上的一个动点,若以
为边,点
,
,
,
为顶点的四边形是平行四边形,请求出所有符合条件的
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/383f12cb70ca55eba4ff012771dbfa9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c850811ba59a05e945a665196539a048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19b62194097ac66a5093c57fca2f5b4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a64ab788f5642b94ccbdc23c9db5b37.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/1/27390e3b-5874-4526-8bdf-eb9aa8c61cc8.png?resizew=421)
(1)有一条抛物线经过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)设该抛物线的一个动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7eb4337e61fdb8a9e216273edab4579c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25b196e03bd7521b1612a74a595903a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
②点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/943712a5e96b16cc15d775cc4687237e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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2023九年级下·江苏·专题练习
名校
7 . 如图,某学校拟建一块矩形花圃,打算一边利用学校现有的墙(墙足够长),其余三边除门外用栅栏围成,栅栏总长度为50m,门宽为2m.这个矩形花圃的最大面积是( )
![](https://img.xkw.com/dksih/QBM/2022/12/18/3133348762083328/3139807457624064/STEM/c41fdb411a89439abd467ffb278a24b2.png?resizew=186)
![](https://img.xkw.com/dksih/QBM/2022/12/18/3133348762083328/3139807457624064/STEM/c41fdb411a89439abd467ffb278a24b2.png?resizew=186)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
8 . 如图,在一面靠墙的空地上用长为24米的篱笆,围成中间隔有二道篱笆的长方形花圃.设垂直于墙的一面篱笆长为x米,花圃的总面积为S平方米.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/19/31c6592c-207c-4115-b6c9-ae66f13f242b.png?resizew=273)
(1)若围成花圃的总面积为20平方米,请设计方案.
(2)求S关于x的函数关系式,并求出最大面积.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/19/31c6592c-207c-4115-b6c9-ae66f13f242b.png?resizew=273)
(1)若围成花圃的总面积为20平方米,请设计方案.
(2)求S关于x的函数关系式,并求出最大面积.
您最近一年使用:0次
2022-10-17更新
|
298次组卷
|
6卷引用:新疆维吾尔自治区新疆农业大学附属中学2021-2022学年九年级上学期11月月考数学试题
9 . 用一段长
的篱笆围成一个一边靠墙的矩形菜园,墙长为
,设这个矩形的宽为
,则矩形面积
随
变化的函数解析式为 __ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1611d15c7e1e4ab4a4a61537b3989d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19d4166fee97516ad1b1d4759a8e4ce6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc3bde6ef2ee5b749b4d48d706543cdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/30/aae7c188-46ec-4544-8d0f-d750cce3b944.png?resizew=203)
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2023-01-28更新
|
109次组卷
|
2卷引用:新疆维吾尔自治区塔城地区乌苏市2021-2022学年九年级上学期期末数学试题
10 . 如图,在
中,
,
,
,点P从点A开始沿
边向点B移动,速度为
;点Q从点B开始沿
边向点C移动,速度为
,点P、Q分别从点A、B同时出发,当其中一点到达终点后,另一点也随之停止运动.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/1/4593b49a-f2e9-42ff-a8e9-b507c41d5abf.png?resizew=178)
(1)几秒时,
的长度为
?
(2)几秒时,
的面积为
?
(3)当
为何值时,四边形
的面积最小?并求这个最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/863ce1fffd617d6aa9025c492c8624ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6747441b260ca043446b5d472fece440.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf2732c063f01d83e8f7cfc2b138732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5631e6ec24d3d67bf4592313b6b3f4f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d989a128e30a701dfff5592476a76bab.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/1/4593b49a-f2e9-42ff-a8e9-b507c41d5abf.png?resizew=178)
(1)几秒时,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2607fdb20da69d708818e5e2d30a96aa.png)
(2)几秒时,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c495b8fd7f7bb21c177c9d50fbf6919.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a09121c96565a467ee7b841f03d3262.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bb743c909488dd788069f10f7a6474d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c5b62ea69808e36e57db3cf2583f118.png)
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2022-12-31更新
|
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