如图,在
中,
,
,
,点D是
的中点,动点M从点B出发,沿着折线
(含端点)运动,速度为每秒1个单位长度,到达A点停止运动,点E,F分别是射线
,
上的动点,AE的长度等于点M走的路程,
,设点M的运动时间为t,点M到
的距离
为
,
的长度为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/28/f7691d93-3ae9-44d7-9d6d-14247e086253.png?resizew=424)
(1)求
关于t的函数关系式并写出自变量的取值范围;
(2)在直角坐标系中画出
的图像,并写出函数
的一条性质;
(3)根据图形直接估计当
时t的取值范围:______.(结果保留1位小数,误差不超过0.2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4494a85de0be0b97a69348115aef8513.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5347fb06cc3e48a1fb482c8e30dc85a.png)
![](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/b44fe942a886df01ad44e19ef4e6f871.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83042953e7f15e984b2da2ee9ca678d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/28/f7691d93-3ae9-44d7-9d6d-14247e086253.png?resizew=424)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7404d4aa0f0bcfe7ebf45d3eeab3cdb6.png)
(2)在直角坐标系中画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7404d4aa0f0bcfe7ebf45d3eeab3cdb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
(3)根据图形直接估计当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df86b0da538701c08fb214608e062372.png)
22-23九年级下·重庆沙坪坝·阶段练习 查看更多[6]
重庆市沙坪坝区第八中学校2022-2023学年九年级下学期3月月考数学试题(已下线)重庆市第一中学校2022-2023学年下学期九年级数学阶段性消化作业(九)试题重庆市礼嘉中学2022-2023学年九年级下期第4次定时练习数学试题(已下线)专题23 动态几何+函数图像(30道)-学易金卷:5年(2019-2023)中考1年模拟数学真题分项汇编(重庆专用)(已下线)2023年江苏省连云港市中考数学真题变式题22-27题2024年重庆市中考备考模拟数学模拟试题(一)
更新时间:2023-03-28 08:52:15
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解答题-作图题
|
适中
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名校
【推荐1】如图,
中,
,
,
.点P从点B出发,沿折线
运动,当它到达点A时停止运动,设点P在运动过程中,其运动的路程为
,
的面积为y(y可以取0).
(1)直接写出y关于x的函数关系式,并注明
的取值范围;
(2)在给定的平面直角坐标系中,画出这个函数的图象,并写出该函数的一条性质;
(3)结合函数图象,若
,直接写出
时的
取值范围.(结果保留1位小数,误差不超
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb5b12692517a39c320f99a479eb055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7012d1ff11db5e150182e19646814cd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a855335176fc36a15017f50a8561348.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/11/e7cbaedd-18e3-4694-9bdc-6c5d804187c1.png?resizew=445)
(1)直接写出y关于x的函数关系式,并注明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)在给定的平面直角坐标系中,画出这个函数的图象,并写出该函数的一条性质;
(3)结合函数图象,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3471ebac67b6a4c296ba7263eb79c57b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7ad78c5c2e3aeb1c03a097681c6ca31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4646418552dc060ebda1232361a01295.png)
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解答题-作图题
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【推荐2】如图,在△ABC中,∠C=90°,BC=6cm,AC=8cm,点D是AB的中点,以D为顶点作∠MDN=∠A,∠MDN的两边分别与线段AC交于点M.N(点M在点N左边).设A,M两点间的距离为xcm,C、N两点间的距离为ycm.
小明根据学习函数的经验,对函数y随自变量x的变化而变化的规律进行了探究.下面是小明的探究过程,请补充完整.
(1)列表:下表的已知数据是根据A,M两点间的距离x进行取点、画图、测量,分别得到了x与y的几组对应值:
请你补全表格:a= ;b= .
(2)描点、连线:在平面直角坐标系xOy中,描出表中各组数值所对应的点(x,y),并画出函数y关于x的图象:
(3)探究性质:随着自变量x的不断增大,函数y的变化趋势: .
(4)解决问题:当AM=CN时,A、M两点间的距离大约是 cm.(保留一位小数)
小明根据学习函数的经验,对函数y随自变量x的变化而变化的规律进行了探究.下面是小明的探究过程,请补充完整.
(1)列表:下表的已知数据是根据A,M两点间的距离x进行取点、画图、测量,分别得到了x与y的几组对应值:
x/cm | 0 | 0.6 | 1.2 | 1.8 | 2.3 | 2.9 | 3.4 | 3.5 | 4.0 | 4.3 | 4.5 | 4.7 | 4.8 |
y/cm | a | 4.6 | 4.3 | 3.9 | 3.6 | 3.1 | 2.6 | 2.4 | b | 1.2 | 0.9 | 0.4 | 0.2 |
(2)描点、连线:在平面直角坐标系xOy中,描出表中各组数值所对应的点(x,y),并画出函数y关于x的图象:
(3)探究性质:随着自变量x的不断增大,函数y的变化趋势: .
(4)解决问题:当AM=CN时,A、M两点间的距离大约是 cm.(保留一位小数)
![](https://img.xkw.com/dksih/QBM/2020/11/6/2586873266618368/2590627702358016/STEM/42f6bc96d1934558bc97afc7e43656e8.png?resizew=448)
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【推荐3】如图(1),在长方形
中,
,
,点P从A出发,沿A→B→C→D路线运动,到D停止;点Q从D出发,沿D→C→B→A路线运动,到A停止.若点P、点Q同时出发,点P速度为
,点Q的速度为
,a秒时点P、点Q同时改变速度,点P速度变为
,点Q速度变为
.图(2)是点P出发x秒后
的面积
与x秒的关系图象;图(3)是点Q出发x秒后
的面积
与x秒的关系图象.
根据题中的信息,解答下列问题
(1)根据图象得:
秒,
,
秒,
.
(2)连接
,当
第一次平分长方形
的面积时,求x的值;
(3)当点P、点Q在运动路线上相距的路程为
时,求x的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b79850d6b00a67110e77a33d1c46b5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432043f79e122f291c47453013042704.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5631e6ec24d3d67bf4592313b6b3f4f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d989a128e30a701dfff5592476a76bab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e304742154d3ceb7767eb0e6ab29977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a37b9278b21fc0dd5e883134a2a3978.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7fbd6b9f85c086ac95562fe45e8d969.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd736fbbf395fc99b5d9fa6f84940735.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfe7a785ff74d9aa4027bec2cdc06513.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b37b4a445e86ac65a31e55698983d7f5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/29/eb1e2c73-6db5-4e3c-a14d-205dc3a3ff89.png?resizew=457)
根据题中的信息,解答下列问题
(1)根据图象得:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d1461f3b7f2a8a65097c8de1dcbfc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4e9bb42376c12d7d21702ae8062b25a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c98c59cd4749afdd21e73529fc84323.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d1461f3b7f2a8a65097c8de1dcbfc7.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(3)当点P、点Q在运动路线上相距的路程为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/998ef3b9bb67d320ce30d9b453d75469.png)
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解答题-问答题
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【推荐1】如图,在平面直角坐标系中
为坐标原点
,已知直线
与
轴、
轴分别交于点
、点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/22/b49e3eb2-f285-464f-bd7f-f36d34924170.png?resizew=235)
(1)求直线
的表达式;
(2)设点
为线段
上一点,过点
分别作
轴、
轴,垂足分别为
、
,当
平分
时,求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd109d3cea698760b0d5edb65bd6f241.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15fb18163df0690365a0d2e7ee88f5a.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/e95e84f5c91c910aaafc5e74dbfbdf59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29610a3415c1e795d35979a5a9ff69f3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/22/b49e3eb2-f285-464f-bd7f-f36d34924170.png?resizew=235)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2634263d383b0487281fdcf6fe3cc625.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0970cffbe8950fb3a631056dfe91f3a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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【推荐2】已知一次函数
分别与
轴、
轴交于点
,点
在直线
上,其纵坐标为5.
(1)填空:点
的坐标为______,点
的坐标为______;
(2)在
轴上找一点
,连接
,使
的值最小,并求出点
的坐标;
(3)在(2)的条件下,求出
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/373e940578737a54a51be72e53a31c36.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/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/28/aac7be61-a30f-4e63-b459-9f4e137b898f.png?resizew=192)
(1)填空:点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(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/43eaef897e016a81cba403ab51e49e09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4d1d99eab930cef884e01b97d4d56f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(3)在(2)的条件下,求出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/357265c532428e886a643e8e653eec9e.png)
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【推荐1】如图,一次函数
的图象与反比例函数
的图象交于点A,与y轴交于点B.已知点A的纵坐标为6.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/6/2f5551f0-0445-4130-ae28-fe333bf158d4.png?resizew=181)
(1)求k的值:
(2)点P在反比例函数的图象上,点Q在x轴上,若以点A,B,P,Q为顶点的四边形是平行四边形,请求出所有符合条件的点P坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/373e940578737a54a51be72e53a31c36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b0b612460326448de36e160c8d29af9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/6/2f5551f0-0445-4130-ae28-fe333bf158d4.png?resizew=181)
(1)求k的值:
(2)点P在反比例函数的图象上,点Q在x轴上,若以点A,B,P,Q为顶点的四边形是平行四边形,请求出所有符合条件的点P坐标.
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【推荐2】已知
,
与
成正比例,
与
成反比.当x=1时,y=﹣12;当x=4时,y=7.
(1)求y与x的函数关系式和x的取值范围;
(2)当x=
时,求y的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27268abd2678be008df3513334b4256d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8aca16ad7b2e7c21bb5555a12578831.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cdf7aaf44733c758606ff325047ab1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d215e8b9a565024fc6ef1a3c7a4675e1.png)
(1)求y与x的函数关系式和x的取值范围;
(2)当x=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10402e4ddd0d323cc1ae83801ae976db.png)
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【推荐1】如图,把
沿边
平移到
,它们重叠部分(即图中的阴影部分)的面积是
的面积的一半.若
,求三角形移动的距离
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ee6e1d480ece7117e1f87ebf4bbeea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06201e4f55b78d8b30afb257d5a1b16b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6024fd4532f5f981deac4582c799a6ef.png)
![](https://img.xkw.com/dksih/QBM/2019/12/13/2354133184749568/2354508204883968/STEM/5ea6c3e4c7a045d58970d265b7066e9e.png?resizew=167)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】如图,在▱
中,
,
,垂足分别为
,
.求证:
![](https://img.xkw.com/dksih/QBM/2023/2/27/3183715093168128/3185127161610240/STEM/9535f90b2eda4712bf0c5254e00afd70.png?resizew=138)
(1)
;
(2)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cd47a24aaef2200bd09aadb18fd28d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ad0882309a3b6d993299e7188a9fea2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://img.xkw.com/dksih/QBM/2023/2/27/3183715093168128/3185127161610240/STEM/9535f90b2eda4712bf0c5254e00afd70.png?resizew=138)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/961c8add43f3891fe46e1c86b363ffd9.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaf6734212a321b02eb527c44cb075f7.png)
您最近一年使用:0次