1 . 如图抛物线
与x轴交于 A、B两点,与y轴交于C点,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/4/74b919a1-c07a-448f-8aa5-2a8a9f85e9e5.png?resizew=351)
(1)求抛物线的解析式及顶点D的坐标;
(2)判断
的形状,证明你的结论;
(3)点M 是x轴上的一个动点,当
最小时,求点M 的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ad732e19306e01b065215a487f0d1ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae838c1a48dfea1f44e5869fac5d2b5e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/4/74b919a1-c07a-448f-8aa5-2a8a9f85e9e5.png?resizew=351)
(1)求抛物线的解析式及顶点D的坐标;
(2)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(3)点M 是x轴上的一个动点,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bb2b7e3b9980d54f90cc6b2147cfd93.png)
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2 . 如图①,抛物线
与
轴交于
和点
,与
轴交于点
,点
是直线下方抛物线上的点,
于点
,
轴于点
,交线段
于点
,
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/4/44dacfb0-4bdf-4c69-a424-5a583e84070f.jpg?resizew=253)
(1)求抛物线的解析式;
(2)写出
与
满足的关系式.当
最大时,求
点的坐标;
(3)如图(2),点
是在直线
上方的抛物线上一动点,当
时,求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/358e2987096a67189bcc2a642da39524.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/993769b494e12c21dff0ee7c53a4a49f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1b47e7bf02b3ca16f7d96b9369e51a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2951b9f77413d5f062acb300b09de1f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08b1da9046b4cb82135a4a1eaa528c53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/4/44dacfb0-4bdf-4c69-a424-5a583e84070f.jpg?resizew=253)
(1)求抛物线的解析式;
(2)写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(3)如图(2),点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf657d9869cd54187469030caf6e17fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
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3 . 已知某抛物线的顶点坐标为
,且与y轴相交于点
,这个抛物线所表示的二次函数的表达式是_____
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29f48e1c656aace41360467f254e359d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed1a65d88f9823d49da8f3b96ea9ec6f.png)
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4 . 如图,二次函数
的图象经过点
,与
轴交于点
,点
在抛物线的对称轴上,
,则点
的坐标为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa11848714c76235b7e9fd567daa0ab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e357eebd36c7985f6624b016be0edff3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e4a30049e7fab254402afa240ea8b7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/4/e7a8950e-59f4-4c91-aa67-5434e57c8813.png?resizew=169)
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5 . 如图,抛物线
与x轴交于点
,
,与y轴交于点C,连接
,点P为线段
上一个动点(不与点C,B重合),过点P作
轴交抛物线于点Q.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/3/c022c2a9-da4f-48be-a2ca-338e8acf1d66.png?resizew=544)
(1)求抛物线的表达式和对称轴;
(2)设P的横坐标为t,请用含t的式子表示线段PQ的长,并求出线段PQ的最大值;
(3)已知点M是抛物线对称轴上的一个点,点N是平面直角坐标系内一点,当线段PQ取得最大值时,是否存在这样的点M,N,使得四边形PBMN是菱形?若存在,请直接写出点M的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58d88bbd34102b55fa928e8ff83f0d52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d71b3cb2a27fbe0d69357431c7575f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcf982e2547498e78cd6b95f5bcaaa62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/548776b62e7a92e1b11f5aeaf4d52392.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/3/c022c2a9-da4f-48be-a2ca-338e8acf1d66.png?resizew=544)
(1)求抛物线的表达式和对称轴;
(2)设P的横坐标为t,请用含t的式子表示线段PQ的长,并求出线段PQ的最大值;
(3)已知点M是抛物线对称轴上的一个点,点N是平面直角坐标系内一点,当线段PQ取得最大值时,是否存在这样的点M,N,使得四边形PBMN是菱形?若存在,请直接写出点M的坐标;若不存在,请说明理由.
您最近一年使用:0次
6 . 如图,抛物线
经过点
,
,P是直线
上的动点,过点P作x轴的垂线交抛物线于点Q.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/3/9b983b18-9ada-4ef0-b048-012ec9041cdd.jpg?resizew=138)
(1)求抛物线的解析式;
(2)若点P在第四象限,连接
.当线段
的值最大时,求
的面积;
(3)已知点
在直线
上,点M在抛物线上,点N在y轴上,在满足(2)的条件下,是否存在这样的点M,N,使以点M,N,Q,R为顶点的四边形是平行四边形?若存在,求出点M的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e59da5115d0dafea24822245f92c48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a0d256036d52b784b8c68bfc8db69d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d78fd2774a2abc057477ab9765c84fdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/3/9b983b18-9ada-4ef0-b048-012ec9041cdd.jpg?resizew=138)
(1)求抛物线的解析式;
(2)若点P在第四象限,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9b0e1bf9e6bf07e803b228334af611b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b17f20c25bb16153b5f2d25062ed7a7.png)
(3)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bd7223f8b88a8aed53e5b77f66b797c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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名校
7 . 已知抛物线
的顶点坐标为
,与x轴交于点A和点B,与y轴交于点C,点P为第二象限内抛物线上的动点.
(2)如图1,连接
交
于点D,当
时,请求出点D的坐标;
(3)如图2,点E的坐标为
,点G为x轴负半轴上的一点,
,连接
,若
,请求出点P的坐标;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d8de071a9c22c96a59b172d76c127e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/782e07e9a7c070fad2520769894350c3.png)
(2)如图1,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51e38858f05138776a582c60c2d4f8c9.png)
(3)如图2,点E的坐标为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/113b875a063c73c0d1be647a20958300.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d08edec3caba065419e78e3cf7a38a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fedbd3e584fd2080dfe2bd9a8abb755c.png)
您最近一年使用:0次
2024-03-02更新
|
609次组卷
|
7卷引用:2024年山东省菏泽市单县中考三模数学试题
2024年山东省菏泽市单县中考三模数学试题辽宁省鞍山市千山区2023-2024学年九年级上学期12月月考数学试题(已下线)专题04 二次函数 (1大易错点分析+20个易错点+易错题通关)-备战2024年中考数学考试易错题(江苏专用)云南省文山壮族苗族自治州文山市2023-2024学年九年级下学期3月月考数学试题2024学年重庆市求精中学校九年级下学期二调模拟考试数学模拟预测题(已下线)专题04 二次函数与几何综合-2024年中考数学二轮热点题型归纳与变式演练(江苏专用)广东省佛山市南海区桂城街道文翰中学2023-2024学年九年级下学期6月月考数学试题
8 . 如图,抛物线
交x轴于点
和
,交y轴于点C.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/27/cf2baacd-92e4-4369-a9b4-7ba81fe2f0df.png?resizew=106)
(1)求此抛物线的解析式.
(2)问在y轴正半轴上是否存在点N使得
与
相似?若存在,请求出点N的坐标;若不存在,请说明理由.
(3)若横坐标为m的点P在第一象限内的抛物线上运动,求m取何值时使得
的面积最大?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad97284da351a44c36c11d5cec429a4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45d57173ef4cd72eb270686875dfd623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f36488f7dff759ace2a27e56c3857056.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/27/cf2baacd-92e4-4369-a9b4-7ba81fe2f0df.png?resizew=106)
(1)求此抛物线的解析式.
(2)问在y轴正半轴上是否存在点N使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40bd8b071b24e92e0b1fd38101ffe400.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebcc52a06d806fde891e09a0a389fcd4.png)
(3)若横坐标为m的点P在第一象限内的抛物线上运动,求m取何值时使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c025ee3317be1099b7bf03a11e37ed4.png)
您最近一年使用:0次
2024-03-02更新
|
74次组卷
|
2卷引用:山东省滨州市邹平市2023-2024学年九年级上学期期末数学试题
9 . 如图,两条开口向上的抛物线
和
在同一平面直角坐标系中,抛物线
交
轴于点
,顶点
的坐标为
.抛物线
交
轴于点
,顶点
的坐标为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/2/4ce2c9d3-0fb5-4454-b4af-cc76447ec9ca.jpg?resizew=409)
(1)连接
,求线段
的长;
(2)点
在抛物线
上,点
在抛物线
上.试判断
和
的大小,并说明理由;
(3)若点
在抛物线
上,
,求
的取值范围;
(4)若点
的横坐标为
,且点
在抛物线
上,则在抛物线
上是否存在点
,使得点
构成的四边形是平行四边形?若存在直接写出
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/172722d11ea7e01411fa06dbb82f46ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fbd49bf20f987c05b4d36e31549075c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/172722d11ea7e01411fa06dbb82f46ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/862c97a840ce8f570e50aa012989f17f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef97d8fe86c8d4a5a620a8479364c986.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fbd49bf20f987c05b4d36e31549075c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a30bc1d0366c6929e9a35a3f92ba41c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79c8923401762634e4dac3ce2c82a619.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/2/4ce2c9d3-0fb5-4454-b4af-cc76447ec9ca.jpg?resizew=409)
(1)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd04f1fa8278efe8136bff7bd9aefc98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/172722d11ea7e01411fa06dbb82f46ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77cfddda247dbb53304764f29ff2dcc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fbd49bf20f987c05b4d36e31549075c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5edf900c810371fb21297c15f86d8743.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b31ac1def558351e2e3ed1235c570530.png)
(3)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab8fdcb3715fdd191db430a275ffc01b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/172722d11ea7e01411fa06dbb82f46ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b3692c80c29c2c826633992a9a37d78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(4)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/172722d11ea7e01411fa06dbb82f46ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fbd49bf20f987c05b4d36e31549075c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33d6dc34b0b71d46a91eb8dd8db01f5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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10 . 如图1,抛物线
与x轴交于
和
两点,与y轴交于点C.
(2)P是抛物线上,位于直线
上方的一个动点,过点P作
于点D,求P坐标为何值时
最大,并求出最大值;
(3)如图②,将原抛物线向左平移2个单位长度得到抛物线
,
与原抛物线相交于点M,点N为原抛物线对称轴上的一点,在平面直角坐标系中是否存在点H,使以点A,M,N,H为顶点的四边形为矩形,若存在,请直接写出点H的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c119eba6bc8434123efc698b0d5930b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9c33700c3358cbbd8db376f9f0613b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddbb898663f98b8400a897913b4d3102.png)
(2)P是抛物线上,位于直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2951b9f77413d5f062acb300b09de1f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
(3)如图②,将原抛物线向左平移2个单位长度得到抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b4d2174f411d9db6ab7b2aea47818cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b4d2174f411d9db6ab7b2aea47818cb.png)
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