1 . 如图,在平面直角坐标系中,直线
与x轴交于点A,与y轴交于点C,抛物线经过A、C两点,与x轴的另一交点为点
.
(2)点D为直线
上方抛物线上一动点;
①连接
,
,设直线
交线段
于点E,
的面积为
,
的面积为
,求
的最大值;
②是否存在点D,使
等于
的2倍?若存在,求点D的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54019221ce4994d43b2ed48b274ef863.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8893a006aed583ebbfe739379e01ee2.png)
(2)点D为直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
①连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d631f45bc652539853f236952afa5bbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbfa1a2af7e38d33634c462300df381f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/235f0a6fb218d28383e6f27f2df1f50f.png)
②是否存在点D,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9290b887e88e8d2fd774a7314e2ca73a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
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2 . 如图,在平面直角坐标中,抛物线
过点
,且交x轴于
,
两点,交y轴于点
.
(2)
是直线
上方抛物线上的一动点,过点
作
轴的平行线,交直线
于点
,当线段
的长取得最大值时,点
的坐标是 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/289ada46dd6a8dd75aba834709f09def.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/e7720309624a5e413f5e612bd492effe.png)
(2)
![](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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.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/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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3 . 在平面直角坐标系中,O为坐标原点,抛物线
与x轴交于A,B两点(点A在点B的左侧),与y轴交于点C,且
.
(1)求抛物线的函数表达式;
(2)点D为线段
上的动点,过点D作
的平行线交
于点E,求
面积的最大值;
(3)点M是该抛物线上不同于A,B的一个动点,连接
,过点O作
的平行线
,过点B作y轴的平行线
,交
于点N,判断直线
是否恒过一定点,如果过定点,求出定点坐标;如果不过定点,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e2d3d0cd37bb8b297447e92bb8f0d03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa234b567f1d5398abe5c7c26cdc1c6e.png)
(1)求抛物线的函数表达式;
(2)点D为线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d631f45bc652539853f236952afa5bbf.png)
(3)点M是该抛物线上不同于A,B的一个动点,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
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4 . 如图,在平面直角坐标系中,抛物线
过点
且交
轴于点
,点
,交
轴于点
,顶点为
,连接
,
.
(2)点
是直线
下方抛物线上的一动点,过点
作
交
轴于点
,
轴交
于点
,求
的最大值,以及此时点
的坐标.
(3)连接
,把原抛物线沿射线
方向平移
个单位长度后交
轴于
,
两点
在
右侧),在新抛物线上是否存在一点
,使得
,若存在,求出点
的坐标,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9553fb9beb9ed49ea5f7a0f077884d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d13aee52677b81031d06518932b1e5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8950c7bc835103d52ceffab14b6b31a.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)点
![](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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c04a48b5c5a4d65b7cd999c678d9161.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7c7f455fadd7b9c24f4c0c3cd834db3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d65d92ac088df79eaa3696e6ccac1b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(3)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/533a7b702ada1dd80123e4041271d521.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](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/191dcc87eb021f4b9a2eb014badb1825.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ea5ae964e9d6c9b0b1160ded8e3e23f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
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5 . 如图,在平面直角坐标系中,抛物线
与
轴交于点
,与
轴交于点
与点
.
(2)如图1,点
为线段
上方抛物线上的任意一点,过点
作
交直线于点
,求
的最大值及此时点
的坐标;
(3)如图2,将抛物线沿着水平方向向右平移3个单位长度得到新的抛物线,点
为原抛物线与平移后的抛物线的交点,点
为原抛物线对称轴上一动点,是否存在以
为腰,以
、
、
为顶点的三角形是等腰三角形?若存在,直接写出点
的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dca04c0c83f1c906f2d7a22a35fc6ea1.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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf02334810fe35d00fe99d2945fbfbd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f36488f7dff759ace2a27e56c3857056.png)
(2)如图1,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.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/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(3)如图2,将抛物线沿着水平方向向右平移3个单位长度得到新的抛物线,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
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名校
6 . 已知,如图,抛物线
与
轴负半轴交于点
,与
轴交于
,
两点,点
在点
左侧.点
的坐标为
,
.
(2)若点
是第三象限抛物线上的动点,当四边形
面积最大时,求出此时面积的最大值和点
的坐标.
(3)将抛物线
向右平移
个单位,平移后的抛物线与原抛物线相交于点
,
在原抛物线的对称轴上,
为平移后的抛物线上一点,当以
、
、
、
为顶点的四边形是平行四边形时,直接写出点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e9b0fcaa6deb9bac941a4366c44f7ef.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/81dea63b8ce3e51adf66cf7b9982a248.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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7a999c36de5c9a9ce876a4a56fa34c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05581788393270ca7057397c95a7ef7b.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(3)将抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e9b0fcaa6deb9bac941a4366c44f7ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
您最近一年使用:0次
2023-11-18更新
|
241次组卷
|
6卷引用:重庆市江北区第十八中学2022-2023学年九年级上学期12月月考数学试题
重庆市江北区第十八中学2022-2023学年九年级上学期12月月考数学试题江苏省盐城市亭湖区盐城景山中学2022-2023学年九年级上学期期末数学试题湖北省京山市2023-2024学年九年级上学期期中数学试题(已下线)专题07 二次函数(考点清单,9个考点)-2023-2024学年九年级数学上学期期末考点大串讲(北师大版)福建省福州市华伦中学2023-2024学年八年级下学期期中数学试题(已下线)中考难点02 二次函数存在性问题四边形类和三角形类(5题型+满分技巧+限时检测)-2024年中考数学【热点·重点·难点】专练(重庆专用)
名校
7 . 如图,在平面直角坐标系中,抛物线
与
轴交于点A,B,与
轴交于点C,其中
,抛物线的对称轴是直线
.
(1)求抛物线的表达式;
(2)如图,点
是直线
下方抛物线上一动点,点
是线段
上一动点,直线
交
轴于点
.若
,求
的最大值及此时点
的坐标;
(3)另有抛物线
的顶点
在线段
上,
经过点
,将抛物线
平移得到新的抛物线
,点
,
平移后的对应点分别是点
,连接
.若
轴,点
在
轴上,
经过点
,写出所有符合条件的点
的坐标,并写出求解点
的坐标的其中一种情况的过程.
![](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/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/150c08f8be8d037a39f8f37fc7104df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d324b8cc99df14a6418e7d0f7b7d7436.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/21/5225abaa-c900-4079-a055-96dd9abeaa93.png?resizew=427)
(1)求抛物线的表达式;
(2)如图,点
![](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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e2315df4d76d4738c7f6fab6b6b68c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(3)另有抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b4d2174f411d9db6ab7b2aea47818cb.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/9b4d2174f411d9db6ab7b2aea47818cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b4d2174f411d9db6ab7b2aea47818cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc2b6c6aec8cfad1ce0277d6db9759c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cf33d73483c93f24cc6a1d76ef22ca6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91f3956f008cc29ca4bae44a087d5427.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d318aa9c816d2c04aeca59216fcefe26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc2b6c6aec8cfad1ce0277d6db9759c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
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2024-01-21更新
|
957次组卷
|
3卷引用:重庆市沙坪坝区第一中学校2023-2024学年九年级上学期期末数学试题
8 . 如图1,经过原点O的抛物线
(a、b为常数,
)与x轴相交于另一点
,在第一象限内与直线
交于点
,抛物线的顶点为点C.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/20/d5690cf8-2da5-41cd-b1b1-fad820bee5c1.png?resizew=532)
(1)求抛物线的解析式及顶点坐标;
(2)在抛物线上是否存在一点P,使
的面积等于8?若存在,求出点P的坐标;若不存在,请说明理由;
(3)如图2,点E是点B关于抛物线对称轴的对称点,点F是直线
下方的抛物线上的动点,
与直线
交于点G.设
和
的面积分别为
和
,求
的最大值,及此时点F的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53be61cd85ec86aabd164cae0265246b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4fd4da08956db1f206c8ea026f4e52d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8148a45d42e764fdebaf85dff82b28a8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/20/d5690cf8-2da5-41cd-b1b1-fad820bee5c1.png?resizew=532)
(1)求抛物线的解析式及顶点坐标;
(2)在抛物线上是否存在一点P,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1715eb5bb98c2f856c8979b04e1125c.png)
(3)如图2,点E是点B关于抛物线对称轴的对称点,点F是直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bd9311e5295f10061deb2872fe04af5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d20227c155003de7163d407daf0a5e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/235f0a6fb218d28383e6f27f2df1f50f.png)
您最近一年使用:0次
9 . 如图,抛物线
经过点
,点
,点
.
(1)求抛物线的解析式,并直接写出直线
的解析式;
(2)如图,点E是直线
上方抛物线上的一动点,当
面积最大时,请求出点E的坐标和
面积的最大值;
(3)在(2)的结论下,过点E作y轴的平行线交直线
于点M,连接
,点Q是抛物线对称轴上的动点,在抛物线上是否存在点P,使得以P、Q、A、M为顶点的四边形是平行四边形?如果存在,请直接写出点P的坐标;如果不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8df32c7b23e4ca6360cb78745b50f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/549f5e607ed8f8812cd9d40b693074fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2375a27ead9549550676d4e6a2b47243.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/7/04f1538d-7d4e-47e5-bcfd-d6da491a4176.png?resizew=266)
(1)求抛物线的解析式,并直接写出直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)如图,点E是直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2657e02314469ad2b13d31dce41b4343.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2657e02314469ad2b13d31dce41b4343.png)
(3)在(2)的结论下,过点E作y轴的平行线交直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
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名校
10 . 已知:抛物线
与x轴相交于
两点,与y轴相交于点C,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/7/93574cf3-ac19-4b3a-80bb-b757915ca69c.png?resizew=379)
(1)求抛物线的表达式并直接写出点C的坐标;
(2)如图,点M是抛物线第一象限内的一点,连接
,求
面积的最大值;
(3)点P也是抛物线第一象限内的一点,过点P作
于N,连接
,当以P、C、N为顶点的三角形与
相似时,直接写出点P的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ceba6b11658f2cc227b1f550ba25c3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cca107b48f2270ed8ac92b2e0885a93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/7/93574cf3-ac19-4b3a-80bb-b757915ca69c.png?resizew=379)
(1)求抛物线的表达式并直接写出点C的坐标;
(2)如图,点M是抛物线第一象限内的一点,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45432507c464b84094430f5c905a23ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cad3e2b2689dfe97ec82d473ab6cf469.png)
(3)点P也是抛物线第一象限内的一点,过点P作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3a6922808e9b59352c25c341cf23851.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7ffcd1925a2b1259221c6a476152f7.png)
您最近一年使用:0次