名校
1 . 直线
经过抛物线
的顶点D,其中
.
(1)求m的值;
(2)点A,B为抛物线上不同的两点,
轴于点M,
轴于点N,
;
①若直线
、直线
和抛物线
交于同一点,求直线
的解析式;
②抛物线与y轴交于点C,直线AC的解析式为
,直线
的解析式为
,且
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/694033aa4e20853cf10f33c870007047.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d922b8f3846e052be457372ad41eb6a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dc3eb2b0592ef2352237c35fdb50cd7.png)
(1)求m的值;
(2)点A,B为抛物线上不同的两点,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41075397f8e19313eaed03814276fa32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/692469a0ad533350f2aa4d609a5a586b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29819c98ebd087116d5e579f4f088fe8.png)
①若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/694033aa4e20853cf10f33c870007047.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d922b8f3846e052be457372ad41eb6a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
②抛物线与y轴交于点C,直线AC的解析式为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c32bdabb0e3b9f223fcfe4dfaea7741.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dff753b5f813cb7ff8f9a2b4f4d992a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1fe43f24734cd2628eabe563127ce7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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2 . 将抛物线
向右平移1个单位长度,得到抛物线
,抛物线
与抛物线
关于x轴对称,则抛物线
的解析式为____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71684dcd40624bb4e765ef803077e021.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab94459e87c666facddbe1a23ae1899d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab94459e87c666facddbe1a23ae1899d.png)
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3 . 已知抛物线
交x轴于
,交y轴于C,点M
是第四象限内抛物线上的一个动点.
(1)求a,b的值;
(2)若点
在该抛物线上,且
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf11d89ebdbd39d535c9de1ef6e515dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/177eac4f78f69529162db39454b1499e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51ef9cd1383692bc038e47d87cf0c0f1.png)
(1)求a,b的值;
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8193193a0c2ae1fbf708dbf0fb65a612.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a46b03f241208edaab2ed7a5be62abf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2ce02a6dadb7d9eb1f96262ba11e766.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aaff39079c196753d1d80419d0a8d5f.png)
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2024-04-10更新
|
65次组卷
|
2卷引用:浙江省杭州市白马湖和东港联考2023-2024学年九年级下学期3月份素养监测数学试题
4 . 现有7张正面分别标有数字
,
,
,0,1,2,3的相同卡片,将它们背面朝上,洗匀后从中随机抽取一张,记卡片上的数字为a,使以x为自变量的函数
的顶点落在第二象限的概率是______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81fb134b2b48acc99213fff6ccfee65f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa403bb584b6b3e0e93ac003df9d6dac.png)
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|
54次组卷
|
2卷引用:浙江省杭州市白马湖和东港联考2023-2024学年九年级下学期3月份素养监测数学试题
5 . 若把二次函数
的图象向左平移2个单位或向右平移1个单位后都会经过原点,此二次函数图象的对称轴是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8352b2e643a7ce605334f1b0e572bfb0.png)
A.直线![]() | B.直线![]() | C.直线![]() | D.直线![]() |
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2024-04-10更新
|
73次组卷
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2卷引用:浙江省杭州市白马湖和东港联考2023-2024学年九年级下学期3月份素养监测数学试题
6 . 在平面直角坐标系中,抛物线
的图象如图所示,对任意的
,称W为a到b时y的值的“极差”(即
时y的最大值与最小值的差),L为a到b时x的值的“极宽”(即b与a的差值),则当
时,W的取值范围是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2255167979157fc47178356150cf5399.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/316d89a7a30deb98fededc64fbb11d28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fcb50f155690f7d2f67c72eac4638be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94b5cb9d52973177cd224c783e9ff08a.png)
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2024-04-10更新
|
49次组卷
|
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7 . 已知二次函数
(其中
是自变量),当
时对应的函数值均为正数,则
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10e71461c5134339b5b54a80e588640f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b94f151c00959a1cd3946e7f8405337.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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名校
8 . 已知二次函数
的图象的最低点在x轴上,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/300cb32ba2b8ea5df00d9beebd4250ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
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9 . 在平面直角坐标系中,抛物线
(
为常数)经过点
,点
的坐标为
,过点
作
轴交抛物线于点
,点
为抛物线对称轴上一点,且
轴,连接
.
(1)求抛物线的函数表达式;
(2)当
时,
的取值范围是______;
(3)
、
两点之间的距离为
,当
时,求
的值;
(4)已知点
的坐标为
,当直线
将
的面积分成
两部分且
时,直接写出
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6458de29ea411405a6a1ea84af71f29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/631386549c0cec5981a1da47b05e5d25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92231e62af3481c523e2e4f0c610320c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24624dffd30b66a5e4de57362b32b2a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69bf093299f0a975d68dc684fb67a393.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(1)求抛物线的函数表达式;
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be48cd4158fb76190935ab143de02ba3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
(3)
![](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/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d277db6e5f716ce030f13b82c59f8d9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(4)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7a999c36de5c9a9ce876a4a56fa34c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37d65e051e943ab28fa57aee2fb57994.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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10 . 已知抛物线
.
(1)若
,求抛物线的对称轴和顶点坐标;
(2)若抛物线过点
,且对于抛物线上任意一点
都有
,若
是这条抛物线上不同的两点,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46611eff35809cfe9ddd3aaf0d5f3388.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
(2)若抛物线过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d4124f83e94663cbf7cc169f2d98071.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc7b73af3dc8b4f5cbf01551ce6f78fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88c6654220eb2d58e29d2cd135ddc20e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2022acf437a9526c27d2dee767736476.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83f9608fc21f1c5480bed9fadd0908a5.png)
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