1 . 如图,抛物线
与
轴交于
两点(点
在点
的左侧),点
的坐标为
,与
轴交于点
,直线
与
轴交于点
.动点
在抛物线上运动,过点
作
轴,垂足为点
,交直线
于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/20/a9e55a1d-13aa-49e5-980b-ffca58467864.png?resizew=145)
(1)求抛物线的表达式;
(2)当点
在线段
上时,
的面积是否存在最大值,若存在,请求出最大值;若不存在,请说明理由;
(3)点
在运动过程中,能否使以
为顶点的三角形是以
为腰的等腰直角三角形?若存在,请直接写出点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e59da5115d0dafea24822245f92c48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ae6f48b9a53c0155a692509cf31f7e6.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97b3c94d505e7c5bcce94afec4af3d92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edd81cac5d2bcf0753819951088027d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1f6ff55f78c657911007e5c5c8b7ab2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff95970af540cc15b7de34dcb670f3c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/20/a9e55a1d-13aa-49e5-980b-ffca58467864.png?resizew=145)
(1)求抛物线的表达式;
(2)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26e59b7c0d4a0b312e674b7bb061240b.png)
(3)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d761700f53254fe90583e5a33481429d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d567bdeba9b8e17d0911f594e141eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
您最近一年使用:0次
2024-03-22更新
|
208次组卷
|
2卷引用:2023年山东省聊城市中考模拟数学试题(四)
2 . 如图,抛物线
经过
、
、
三点,点
为抛物线上第一象限内的一个动点,
交
于点E.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/20/e2a97a19-b10e-4c80-89b8-f89148f5e468.png?resizew=363)
(1)求抛物线所对应的函数表达式;直接写出直线
的表达式;
(2)当
时,求点D的坐标;
(3)以
为对角线,作菱形
,使点N在
的右边,且
,求点N与y轴的最大距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2375a27ead9549550676d4e6a2b47243.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f515842db016eaea3d3f1e0e9418aea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7641baffd700f0c577d001e9d7a6c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4071326e546d73b4cb4b362f1166716.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c8a4b91763add3ee3a9f0dc1937398d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/20/e2a97a19-b10e-4c80-89b8-f89148f5e468.png?resizew=363)
(1)求抛物线所对应的函数表达式;直接写出直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3620030e8808da46df97330103827913.png)
(3)以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccfb05bcbb3107a1464bc9c28c2ad07e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b55ee997ca9e39178f4d9cda0c2e640a.png)
您最近一年使用:0次
名校
3 . 如图,在平面直角坐标系
中,抛物线
与
轴交于
,
两点,与
轴交于点
,点
为
轴下方抛物线上一点.
(2)如图1,当点
的横坐标为
时,
为线段
上一点,若
的面积为
,请求出
点坐标;
(3)如图2,点
在
轴的右侧,直线
与
轴交于点
,直线
与抛物线交于点
,连接
与
轴交于点
,请问
的值是否为定值,如果是,请求出这个定值;如果不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e59da5115d0dafea24822245f92c48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45d57173ef4cd72eb270686875dfd623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edd81cac5d2bcf0753819951088027d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)如图1,当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7189182cc23d759be2764d141952737b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31da7291140e430a11e2a10cc6cdefbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(3)如图2,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.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/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e109a9e42361f1dd54861a741b97f196.png)
您最近一年使用:0次
2024-03-20更新
|
324次组卷
|
3卷引用:2023年山东省济南市中考数学一模压轴题汇编试题
4 . 如图,在平面直角坐标系中,直线
与x轴交于点A,与y轴交点C,抛物线
过A,C两点,与x轴交于另一点B.
(2)在直线
上方的抛物线上有一动点E,连接
,与直线
相交于点F,当
时,求E点坐标.
(3)在(2)的条件下,若点E位于对称轴左侧,点M是抛物线对称轴上一点,点N是平面上一点,当以M,N,E,B为顶点的四边形是菱形时,直接写出点M的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e488bcf5c0eacfb5cb27a70038d4f77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ba23d524dc2a51f2a2f5a2eec842f22.png)
(2)在直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f97e75d014fe7c5a86a92f9160539a7.png)
(3)在(2)的条件下,若点E位于对称轴左侧,点M是抛物线对称轴上一点,点N是平面上一点,当以M,N,E,B为顶点的四边形是菱形时,直接写出点M的坐标.
您最近一年使用:0次
2024-03-19更新
|
322次组卷
|
3卷引用:2024年山东省济南市中考数学模拟预测题(一)
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)
您最近一年使用:0次
7 . 如图,抛物线
与x轴交于A,B两点,与y轴交于点
,连接
.点P为抛物线上位于第一象限内的一个动点,
交y轴于点D.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/26/4220e181-f4d1-41be-aa3b-5cd39c695e2c.png?resizew=163)
(1)求k的值;
(2)当
为等腰三角形时,求点D的坐标;
(3)连接
,求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b41758098cff7838cb12900a91803b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7641baffd700f0c577d001e9d7a6c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/26/4220e181-f4d1-41be-aa3b-5cd39c695e2c.png?resizew=163)
(1)求k的值;
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
(3)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d841a0b27c6b6bb83b6990058f125cf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df7f9f7952c4be18cb73393047c2ad75.png)
您最近一年使用:0次
2024-03-02更新
|
183次组卷
|
2卷引用:山东省枣庄市山亭区2023-2024学年九年级上学期期末数学试题
8 . 如图,抛物线
与
轴交于点
和点
,与
轴交于点
,连接
,点
在抛物线上.
(2)如图1,点D在第一象限内的抛物线上,连接
,
,请求出
面积的最大值;
(3)点
在抛物线上移动,连接
,存在
,请直接写出点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a0d44326c214c7a5ecc3068a29ec96f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/311497849126f1aaf1da0ec75602eabf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7291b3d921f595f28960abcdce6dfbed.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(2)如图1,点D在第一象限内的抛物线上,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
(3)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b775fcad81420033d6cd594eab772ea6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
您最近一年使用:0次
2024-03-01更新
|
444次组卷
|
7卷引用:山东省济南市章丘区2023-2024学年九年级上学期期末数学试题
9 . 如图1,已知二次函数
的图象与
轴交于点
和点
,与
轴交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/1/d4713185-ce6c-43e8-ad0e-3ec1e4e59810.png?resizew=315)
图1图2
(1)求这个二次函数的表达式;
(2)若点
为二次函数图象上的一点,当
时,求点
的坐标;
(3)如图2,将直线
向下平移,与二次函数的图象相交于M,N两点,直线
相交于点
,求点
的横坐标(直接写出答案).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e59da5115d0dafea24822245f92c48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/586d6b7a54a256cb0ecd0ea2d8262f6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51b5288ad85ce1ff24d0b4053a4869ef.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/1/d4713185-ce6c-43e8-ad0e-3ec1e4e59810.png?resizew=315)
图1图2
(1)求这个二次函数的表达式;
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4c899276bb7c0845a2a574cf6e42bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(3)如图2,将直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65db9c631e764b55ed83f953f911bf6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
您最近一年使用:0次
10 . 如图,抛物线
与x轴交于
两点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/26/26d8830b-a402-4422-931f-2411d3978501.png?resizew=216)
(1)求该抛物线的表达式;
(2)在直线
上方的抛物线上是否存在点P,使得
面积最大,若存在,请求出点P的坐标及面积最大值;若不存在,请说明理由;
(3)Q在抛物线对称轴上,请直接写出当
为直角三角形时,点Q的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad97284da351a44c36c11d5cec429a4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbf69f85d01dfb0edfe11420d9f87978.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/26/26d8830b-a402-4422-931f-2411d3978501.png?resizew=216)
(1)求该抛物线的表达式;
(2)在直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c025ee3317be1099b7bf03a11e37ed4.png)
(3)Q在抛物线对称轴上,请直接写出当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe51b50eca45db5d8ca5f4949c56d137.png)
您最近一年使用:0次