1 . 已知抛物线
与x轴交于B、C两点,其中
,且抛物线经过点
、
.
(1)求抛物线的解析式;
(2)点P在x轴上,E为抛物线的顶点,当
周长最短时,求P点坐标;
(3)点Q是直线DC下方抛物线上的一点,求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d42f05b013e4b7166cbc87c5a83d6a85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1bc0cc13efe1701baf08799f7760844.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed7d552cd1e5ebaf18b67c6b36d1de4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/2/07f957f9-33c2-40a1-b61e-97336c8b85da.jpg?resizew=110)
(1)求抛物线的解析式;
(2)点P在x轴上,E为抛物线的顶点,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbe40405cd7bd60d69dd535d6da85c00.png)
(3)点Q是直线DC下方抛物线上的一点,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bee3a036ef2c2c4ca55f9bd5d9400651.png)
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2 . 抛物线
与x轴交于
,B两点,与y轴交于点C,抛物线的对称轴为直线
,点D在抛物线上.
备用图
(1)求拋物线的解析式;
(2)如图,点D在
上方的抛物线上,当
的面积最大时,求点D的坐标;
(3)是否存在点D,使得
?若存在,求出点D的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d8de071a9c22c96a59b172d76c127e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/913f78382630e50543e5f7192cae3ed3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/12/0ee90285-3c54-4ca0-a72c-82c69a67ab50.jpg?resizew=305)
备用图
(1)求拋物线的解析式;
(2)如图,点D在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b506b0941433a6a5d5387d0ec95596ea.png)
(3)是否存在点D,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ea0dfd1cca67d2359a14581ce57136b.png)
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2023-11-07更新
|
397次组卷
|
2卷引用:海南省三亚市崖州区三亚青林学校2023-2024学年九年级上学期期中数学学情检测卷
3 . 如图,拋物线:
与
轴交于
,
两点,与
轴交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/26/f881104a-23cd-444f-a169-7d32b5fa0f8e.png?resizew=149)
(1)求抛物线的解析式;
(2)在
轴的上方,拋物线上是否存在一点
,使
的面积等于
面积的
,如果存在,请求出P点坐标,如果不存在,请说明理由.
(3)如图1,点
在第四象限的拋物线上,将线段
绕点
逆时针旋转90°.得到线段
,当点
恰好落在
轴上时,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/a0929421a6188c3122442866b0b85a5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08ef03f452410ab19c6246567c427178.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/26/f881104a-23cd-444f-a169-7d32b5fa0f8e.png?resizew=149)
(1)求抛物线的解析式;
(2)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caa585b9257ed0798213a9ae9b87d291.png)
(3)如图1,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d97dc3b752832906de41447bb58a341.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
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2023-11-04更新
|
87次组卷
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2卷引用:海南省省直辖县级行政单位临高县2023-2024学年九年级上学期12月月考数学试题
名校
4 . 已知抛物线的顶点坐标为
,且经过点
,则抛物线的解析式为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fad20e2bc6576fc461419f8f138d26e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b69abe959988e4c8c0739f5857ccfb0f.png)
您最近一年使用:0次
名校
5 . 如图1,抛物线
经过点
和点
,抛物线与直线
相交于
、
两点,点
是抛物线上的一个动点.
(1)求抛物线的解析式;
(2)如图2,若点
是在直线
上方抛物线上的动点,连接
、
,请求出
面积的最大值;
(3)如图3,过点
作直线
轴于点
,交直线
于点
,是否存在点
,使
为等腰三角形?若存在,请求出点
的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c977d0f39570f4f89be26efe20cc056.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66b8c639c851e0044ee22020324c5570.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/046febfd08dfb10ae00b19b69c708413.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ab466aedd6e176088d8dee7bc3e3aaa.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/1/d22766bd-a06e-4430-b263-2900b1c8b636.png?resizew=155)
(1)求抛物线的解析式;
(2)如图2,若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a855335176fc36a15017f50a8561348.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/1/a8c52f12-89b1-486c-a47c-ad4dc3cb4ae5.png?resizew=159)
(3)如图3,过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f00d0ff8dd38da17167cf9b789eec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2657e02314469ad2b13d31dce41b4343.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/1/5f38b586-9141-4bd9-b80d-86f4e104cff6.png?resizew=154)
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名校
6 . 如图①,已知抛物线L:
经过点
,
,过点A作
轴交抛物线于点C,
的平分线交线段
于点E,点P是抛物线上的一个动点.
(2)若动点P在直线
下方的抛物线上,连接
、
,当
面积最大时,求出P点坐标;
(3)如图②,F是抛物线的对称轴
上的一点,在抛物线上是否存在点P,使
成为以点P为直角顶点的等腰直角三角形?若存在,直接写出所有符合条件的点P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/7f94c4f6b762fddb0e313050ef6932eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f55d12701014cf53071093e8739d089b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3d51fa2414dbedc6b24777b28a796c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(2)若动点P在直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef49a3ca580a144cc65a609c167facc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49969d5e2b17e6b2b8c651359941deb3.png)
(3)如图②,F是抛物线的对称轴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79c71c49dc9a9de1a0221769e4eb8616.png)
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2023-10-18更新
|
193次组卷
|
5卷引用:2023年海南省海口市长彤学校中考数学三模模拟试题
(已下线)2023年海南省海口市长彤学校中考数学三模模拟试题2023年海南省海口市长彤学校中考数学模拟预测试题广东省珠海市香洲区珠海市紫荆中学2023-2024学年九年级上学期月考数学试题(已下线)清单13 与二次函数相关的10种存在性问题 -2023-2024学年九年级数学上学期期末考点大串讲(苏科版)(已下线)专题04 二次函数中特殊三角形存在性问题专项训练-【好题汇编】备战2023-2024学年九年级数学上学期期末真题分类汇编(广东专用)
名校
7 . 如图,抛物线
与
轴交于
,
两点,与
轴交于点
.
(1)求抛物线的解析式;
(2)点
是抛物线的顶点,请画出四边形
,并求出四边形
的面积;
(3)点
是抛物线上一动点,设点
的横坐标为
,点
为抛物线对称轴
上一点.若
是等腰直角三角形,请直接写出所有满足条件的点
的坐标,并写出其中一种情况的计算过程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ceba6b11658f2cc227b1f550ba25c3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/774480361088aa3198c7bc3148fa23fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6711f23c2900c7b00a833bf21edb23d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/24/d2cd49f8-f44f-4916-9f8c-79c05e7b7aa1.png?resizew=578)
(1)求抛物线的解析式;
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/520f8abda6a85e7ef6f281fc2df853fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/520f8abda6a85e7ef6f281fc2df853fa.png)
(3)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/944ccd297fe249e888b0205cae175be0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f2ea13010e2399194be2a681310543e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
您最近一年使用:0次
名校
8 . 如图,抛物线
与x轴交于点
和点B,与y轴交于点
,顶点为D,连接
,P是第一象限内抛物线上的动点,连接
,设点P的横坐标为t.
(1)求抛物线的解析式;
(2)当t为何值时,
的面积最大?并求出最大面积;
(3)M为直线
上一点,求
的最小值;
(4)过P点作
轴,交
于E点.是否存在点P,使得
为等腰三角形?若存在,请直接写出点P的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a13ec30801fb4f6ccb49b3ef5ecab52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/913f78382630e50543e5f7192cae3ed3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/865638eb4f3818d76cd28a045b70e17d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad347e9d1b3b2f6fe2fdcc5a30b023b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43eaef897e016a81cba403ab51e49e09.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/1/2b5bae08-f883-4124-8b6d-01c20cb770ca.jpg?resizew=337)
(1)求抛物线的解析式;
(2)当t为何值时,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f409b28f7cb97726646e79709ad25190.png)
(3)M为直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19e94744f71004520f51b62de7f1ab43.png)
(4)过P点作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae95e96ce568efee50145f8d017353df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6acb6bb9683c7ca74bf11255d51e514e.png)
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2023-06-28更新
|
508次组卷
|
2卷引用:2023年海南省海口市美兰区海南师范大学附属中学三模数学试题
真题
9 . 如图,已知抛物线与
轴交于
和
两点,与
轴交于点
.直线
过抛物线的顶点
.
(2)若直线
与抛物线交于点
,与直线
交于点
.
①当
取得最大值时,求
的值和
的最大值;
②当
是等腰三角形时,求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8748dc55e2f45bc37fc4d84d7310f79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/688e997d4de2710f59eb71ad10c83365.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/9c653f3ac494070e375977c3bcb3ede1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02c4e445fe7a769cb42fcbe30cb7cbae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f5a0a6e5b3f489a7032ea5116c96024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
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2023-06-14更新
|
1549次组卷
|
13卷引用:2024年海南省部分学校中考第一次模拟考试数学模拟试题
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10 . 如图,抛物线
经过
、
、
三点,对称轴与抛物线相交于点
、与
相交于点
,与
轴交于点
,连接
.
(2)抛物线上是否存在一点
,使
与
的面积相等,若存在,请求出点
的坐标;若不存在,说明理由.
(3)抛物线上存在一点
,使
,请直接写出点
的坐标;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0929421a6188c3122442866b0b85a5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08ef03f452410ab19c6246567c427178.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c052d7af2f98d95bac8725b608fba0fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
(2)抛物线上是否存在一点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e9cc4de98250bee5e6bd85c1c1ba17b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06c183bee668a57b48c14b0c9c33cf28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
(3)抛物线上存在一点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2331b88664660d9dcbeb7e77a25047e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
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2023-04-02更新
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5卷引用:2023年海南省中考数学模拟预测题