如图,矩形
中,
,
,点E为
边的中点,点F为
边上的三等分点
,动点P从点A出发,沿折线
运动,到C点停止运动.点P的运动速度为每秒2个单位长度,设点P运动时间为x秒,
的面积为y.
(2)在平面直角坐标系中画出这个函数的图像,并写出该函数的一条性质;
(3)结合函数图像,直接写出当直线
与该函数图象有两个交点时,b的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07160f14b3b453bebb64cb2bf96dc85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34a9980a064994b10855cef86dad98a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3087da5c11909dab613378fee8d471fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91b51d3992644d37dc71c9b5a97d515c.png)
(2)在平面直角坐标系中画出这个函数的图像,并写出该函数的一条性质;
(3)结合函数图像,直接写出当直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2689cf9f45a7c65631c71bb5105f9b81.png)
23-24九年级下·重庆北碚·阶段练习 查看更多[3]
重庆市北碚区西南大学附属中学校2023-2024学年九年级下学期3月月考数学试题(已下线)中考重点05 动态几何+函数图像(6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)(已下线)数学(重庆卷)-学易金卷:2024年中考考前押题密卷
更新时间:2024-03-31 11:47:04
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相似题推荐
解答题-问答题
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【推荐1】如图,矩形OABC顶点B的坐标为(8,3),定点D的坐标为(12,0),动点P从点O出发,以每秒2个单位长度的速度沿x轴的正方向匀速运动,动点Q从点D出发,以每秒1个单位长度的速度沿x轴的负方向匀速运动,P、Q两点同时运动,相遇时停止.在运动过程中,以PQ为斜边在x轴上方作等腰直角三角形PQR,设运动时间为t秒,△PQR和矩形OABC重叠部分的面积为S.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/28/6e4d5ccf-0cb0-487d-baea-073500863b39.png?resizew=289)
(1)当t=___________时,△PQR的边 QR经过点B
(2)求S关于t的函数关系式,并写出t的取值范围.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/28/6e4d5ccf-0cb0-487d-baea-073500863b39.png?resizew=289)
(1)当t=___________时,△PQR的边 QR经过点B
(2)求S关于t的函数关系式,并写出t的取值范围.
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解答题-作图题
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【推荐2】如图,
是
与弦
所围成图形的外部的一定点,
是弦
上的一动点,连接
交
于点
.已知
,设
,
两点间的距离为
,
,
两点间的距离为
,
,
两点间的距离为
.
![](https://img.xkw.com/dksih/QBM/2020/7/7/2500756559765504/2500791613300736/STEM/8d19ae2cc31649b1bf4bb00c4cd207fa.png?resizew=237)
小石根据学习函数的经验,分别对函数
,
随自变量
的变化而变化的规律进行了探究,下面是小石的探究过程,请补充完整:
(1)按照下表中自变量
的值进行取点、画图、测量分别得到了
,
与
的几组对应值:
(2)在同一平面直角坐标系
中,描出补全后的表中各组数值所对应的点
,
,并画出函数
,
的图象;
![](https://img.xkw.com/dksih/QBM/2020/7/7/2500756559765504/2500791613300736/STEM/267b8fd35ca44855ac4627cd365ec0d7.png?resizew=243)
(3)结合函数图象,解决问题:当
为
的中点时,
的长度约为______
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](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/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/212063c7e452cd2bd0378d67929e3f6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40a606569d1ed164a206be54408b3a09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4a375187afe7d71542a3d5e86353336.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a5efdc0d01bbc0802c8cf3afb8abb0f.png)
![](https://img.xkw.com/dksih/QBM/2020/7/7/2500756559765504/2500791613300736/STEM/8d19ae2cc31649b1bf4bb00c4cd207fa.png?resizew=237)
小石根据学习函数的经验,分别对函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(1)按照下表中自变量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![]() | 0 | 1 | 2 | 3 | 4 | 5 | 5.40 | 6 |
![]() | 4.63 | 3.89 | 2.61 | 2.15 | 1.79 | 1.63 | 0.95 | |
![]() | 1.20 | 1.11 | 1.04 | 0.99 | 1.02 | 1.21 | 1.40 | 2.21 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea8529f413a378df2659f52e946e9a4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acdc46bbcc5bfcfc6ce73f3bac905f49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
![](https://img.xkw.com/dksih/QBM/2020/7/7/2500756559765504/2500791613300736/STEM/267b8fd35ca44855ac4627cd365ec0d7.png?resizew=243)
(3)结合函数图象,解决问题:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee9179bee09452bbd0e5080501bb0ee9.png)
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名校
【推荐3】如图①,四边形
中,
,
.动点
从
出发,以每秒1个单位的速度沿路线
运动到
停止.设运动时间为
,
的面积为
,
关于
的函数图象如图②所示.
(1)结合图①和图②可知,
__________,
__________;
(2)①当点
在线段
上运动时,请写出
与
的关系式(并写明自变量的取值范围);
②当
时,
等于多少?
(3)如图③,动点
从点
出发,以每秒2个单位的速度沿路线
运动到点
停止,同时,动点
从点
出发,以每秒5个单位的速度沿路线
运动到点
停止,设运动时间为
,当
点运动到
边上时,连接
、
、
,当
的面积为
时,直接写出
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a11029ca6b4b9e7f777af0280cf163c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4795ee1f96b430529934e2231b38885d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4853b4705dee3de86e18a346ee3ae853.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/101da161ae17652ccbe7d3f888762c2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/18/baba65c3-6de8-4993-a563-9c39932d2337.png?resizew=394)
(1)结合图①和图②可知,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ec5d678ec42846e1d28301e3bfd4be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9f63d194aa0d4091618b6f41f569ee2.png)
(2)①当点
![](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/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8564cc22fc0687cd91dba324194885a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)如图③,动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3087da5c11909dab613378fee8d471fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d311b8b003421d42aa6a3673d1e0baa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f53330c107f8245290a5a42c3d356acd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e87b2f781cafa7989d81f9bf8c42b150.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbda952d7a93cfd73417e5cfecb51be1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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【推荐1】某商场销售一批进价为10元/件的日用品,经调查发现,每月销售件数y(件)与销售价格x(元/件)之间的关系如图所示,每月销售该商品获得的利润为W(元).
(2)当商场每月销售该商品的利润为4000元时,求该商品的定价;
(3)为了获得最大的利润,该商品的销售价应定为多少?最大利润是多少?
(2)当商场每月销售该商品的利润为4000元时,求该商品的定价;
(3)为了获得最大的利润,该商品的销售价应定为多少?最大利润是多少?
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【推荐2】如图,在直角坐标系中,直线
与双曲线
分别相交于第二、四象限内的
,
两点,与x轴相交于C点.已知
.
(1)求y1,y2对应的函数表达式;
(2)求
的面积
(3)直接写出不等式
的解集.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02e39191f61e3e67f8b371bb5234e61a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29d87bf57328e9c14a1c392bcd4ed14d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0689d5a24df641ad4267b9672c4ae510.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0ddb4067ef649f5928f582c48f1be7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ef520a2657abdf14fa6818c380b596a.png)
(1)求y1,y2对应的函数表达式;
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
(3)直接写出不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b99b75bbbbeefc4b86192c08f37b98e9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/31/827dfbb1-b0f8-4277-9648-c12d01bb2ab9.png?resizew=168)
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【推荐2】(1)如图1,
满足
.
①求
的值;
②若C(-6,0),连CB,作BE⊥CB,垂足为B,且BC=BE,连AE交
轴于P,求P点坐标.
(2)如图2,若A(6,0),B(0,3),点Q从A出发,以每秒1个单位的速度沿射线AO匀速运动,设点Q运动时间为
秒,过Q点作直线AB的垂线,垂足为D,直线QD与
轴交于E点,在点Q的运动过程中,一定存在△EOQ≌△AOB,请直接写出存在的
值以及相应的E点坐标.
![](https://img.xkw.com/dksih/QBM/2015/12/14/1573941562580992/1573941569069056/STEM/db1e30e7e0c34261bc82c31b3094820c.png)
![](https://img.xkw.com/dksih/QBM/2015/12/14/1573941562580992/1573941569069056/STEM/3bdca78926b54c4f8f4771e43900e001.png)
①求
![](https://img.xkw.com/dksih/QBM/2015/12/14/1573941562580992/1573941569069056/STEM/a13038c63d964f60b6eb9a1da147ad93.png)
②若C(-6,0),连CB,作BE⊥CB,垂足为B,且BC=BE,连AE交
![](https://img.xkw.com/dksih/QBM/2015/12/14/1573941562580992/1573941569069056/STEM/105068b39acc4d2f977af0a57d8705ea.png)
(2)如图2,若A(6,0),B(0,3),点Q从A出发,以每秒1个单位的速度沿射线AO匀速运动,设点Q运动时间为
![](https://img.xkw.com/dksih/QBM/2015/12/14/1573941562580992/1573941569069056/STEM/3e37a11eb16c4ec5adec23d3b3822453.png)
![](https://img.xkw.com/dksih/QBM/2015/12/14/1573941562580992/1573941569069056/STEM/105068b39acc4d2f977af0a57d8705ea.png)
![](https://img.xkw.com/dksih/QBM/2015/12/14/1573941562580992/1573941569069056/STEM/3e37a11eb16c4ec5adec23d3b3822453.png)
![](https://img.xkw.com/dksih/QBM/2015/12/14/1573941562580992/1573941569069056/STEM/6bfe46da02a54753bb466b18128a24a6.png)
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解答题-问答题
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【推荐1】如图,矩形
的对角线
、
相交于点O,
,
cm.
的度数;
(2)求矩形对角线
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/551137582e6b5534016fe384b492b13e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/781ccc2cdcc1683d5a1366ebce65e689.png)
(2)求矩形对角线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
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解答题-证明题
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适中
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【推荐2】如图所示,在矩形
中,点E在线段
上,点F在线段
的延长线上,连接
交线段
于点G,连接
,
,
.
(1)求证:四边形
是平行四边形;
(2)若
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8164432b13bdfcd05df7dacac832b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc15c1126ca55e6426eea2184396e46d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/2/4b56b50e-f899-4cfa-aa62-be7bea132fd6.png?resizew=164)
(1)求证:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03e904f5b316b9ba89599fb789dd9b09.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a021a12f9cddaefd298586a1c2b4e8d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d97dc3b752832906de41447bb58a341.png)
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