名校
1 . 根据研究,人体内血乳酸浓度升高是运动后感觉疲劳的重要原因
如果血乳酸浓度降到
以下,运动员就基本消除了疲劳,体育科研工作者根据实验数据,绘制了一幅图象,它反映了运动员进行高强度运动后,体内血乳酸浓度随时间变化而变化,下列叙述错误的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54e1d0f65817ba32a732040518f41440.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/453e361b55375a73e92063c26d912c0f.png)
A.运动后血乳酸浓度先升高再降低 |
B.当![]() ![]() |
C.采用静坐方式放松时,运动员大约![]() |
D.为了更快达到消除疲劳的效果,应该采用慢跑活动方式来放松 |
您最近一年使用:0次
2024-05-08更新
|
74次组卷
|
4卷引用:重庆市第十一中学校2023-2024学年七年级下学期6月月考数学试题
2 . 如图,
是边长为
的菱形,且
.动点
,
分别以每秒
个单位长度的速度同时从点
出发,点
沿折线
方向运动,点
沿折线
方向运动,当两者相遇时停止运动.设运动时间为
秒,点
,
的距离为
.
关于
的函数表达式并注明自变量
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,写出点
,
相距
个单位长度时
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5b8b98b2f83279a49e94d9f48c5e6f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e7a366c0b70345e120cf991180ed483.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d87dfa6d5db3429e279f2e019d1575a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](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,写出点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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3 . 如图,
中,
.D为
的中点,动点P以每秒1个单位长度的速度从点A出发,沿
方向运动到点B停止.连接
,设点P的运动时间为x秒,
的面积为y.
(2)在给定的平面直角坐标系中,如图2,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,请直接写出
的面积为6时x的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b51f6c3470c2a09c87776c1b52f3a7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66d0984bb4715e5e6100153012ddc5c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3da7bcea5a45eeae211f5851f12a7517.png)
(2)在给定的平面直角坐标系中,如图2,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,请直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3da7bcea5a45eeae211f5851f12a7517.png)
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4 . 在一条笔直的公路上有A,B,C三地,C地位于A,B两地之间,甲车先从A地沿这条公路匀速驶向C地,1小时后乙车从B地沿这条公路匀速驶向A地,在甲车出发至甲车到达C地的过程中,甲、乙两车与C地的距离
(单位:
),
(单位:
)与甲车行驶时间t(单位:h)之间的函数关系如图.其中正确的选项是( )
①甲车的行驶速度为
;
②乙车的行驶速度为
;
③求乙车出发
小时,两车相遇;
④两车相遇时,甲车距离C地
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5fe30c67ac20cd4e8b9cc2d0d420a7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5fe30c67ac20cd4e8b9cc2d0d420a7b.png)
①甲车的行驶速度为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1840a81eea34dd19991e81f21f1a85fe.png)
②乙车的行驶速度为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5240f45da617379f6977315ba693f51a.png)
③求乙车出发
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/212d6e1f4d7dcc0e5e902c46e3b1dfcc.png)
④两车相遇时,甲车距离C地
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8260b3f4fee533d8338323a511b03e1d.png)
A.①④ | B.②③ | C.①②③ | D.①②④ |
您最近一年使用:0次
5 . 如图1,在长方形
中,
为
边上一点,其中
.动点
从
开始,以
的速度沿
路线运动,然后以
的速度沿
路线运动,到点
停止.图2是点
出发
秒后,
的面积
随时间
变化的图象.根据图中提供的信息,回答下列问题:
______
______
______
______
.
(2)当
的面积为
时,求
的值.
(3)如图3,当点
以
的速度在
上运动时,动点
同时以
的速度从
点出发沿边
运动,到
点停止.当
为何值时,
与
全等,请直接写出
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c2c719fea0f17b7252d69f3c1a7e27e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79789686104cab147c239d152271e076.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ccfc06739ab01294379f26e1c8124a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cad2517d023ea45035ba40813ce5e50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0ed8ff962b116e2b6071e96abf8b4bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad3cd61d00f89e68ccca2cac5c937783.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb194fd63b75af067ba10dee7471d299.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d744165d6aad705f64de41a9d931750a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45d4581762654049c645a80e1c12094e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5714f124329e4ddc987c3914cf59bbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5479b38decdc8a074b246aa44c92932a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc1dce4a03cf2c9a68b2399d4339a035.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad3cd61d00f89e68ccca2cac5c937783.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eff05a1709a7d81ed4697e472dfdce1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)如图3,当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79789686104cab147c239d152271e076.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/568ce8fdc4766e12308996f5b2243307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b6accdd9b317c922d335e44911df357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba70863115b0947e98214a7b2512167d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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6 . 艳艳与君君约定去爬缙云山,开始两人一起坐缆车至中转点,休息片刻后步行登山至缙云山山顶欣赏美景.设所用的时间为
,离山脚的高度为
,下图能反映整个上山顶的过程中变量
与
之间关系的大致图象是( )
![](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/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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7 . 如图,正方形
是边长为4,动点
以每秒1个单位长度的速度从点
出发,沿折线
运动,到达点
停止运动,动点
以每秒1个单位长度的速度从点
出发,沿折线
运动,到达点
停止运动,两动点同时出发,设运动时间为
秒,
的面积为
.
关于
的函数表达式并注明自变量
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;
的面积为
时
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7a6be08c747b22834f1425c6253eebc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f2ea13010e2399194be2a681310543e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](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;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f2ea13010e2399194be2a681310543e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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8 . 如图是北京市某天的气温变化图,根据图象判断,以下说法正确的是( )
A.当日最低气温是![]() |
B.从早上![]() ![]() ![]() |
C.当日温度为![]() |
D.当日气温在![]() ![]() |
您最近一年使用:0次
2024-04-28更新
|
42次组卷
|
3卷引用:重庆市实验外国语学校2023-2024学年八年级下学期第三次月考数学试题
名校
9 . 如图1,在梯形
中,
,点E在边
上且
.动点P,Q同时从点E出发,点P以每秒1个单位长度沿折线
方向运动到点D停止,点Q以每秒2个单位长度沿折线
方向运动到点C停止.设运动时间为t秒,
的面积为y.
(2)如图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,若直线
与函数图象有1个交点,则t的取值范围是 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79c6de926c1e36ab1d870b8a49088213.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30b0393ce62b24aa5f9b740d4cc6743b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dd04df33c5561404c62be1cfb130b4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/296d0b6fd8e5174f03b2f9042f1f1c17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b51ece6bb53c3f5bf2da7d9ee5960e44.png)
(2)如图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,若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7979f5af463905d06d7651b756a2a1b.png)
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10 . 如图,在矩形
中,
,
,动点
,
分别以每秒1个单位长度的速度同时从点
和点
出发,点
沿折线
方向运动,点
沿折线
方向运动,当点
到达点
时停止运动.设运动时间为
秒,
的面积为
.
关于
的函数表达式并注明自变量
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,写出当
的面积不小于6且不大于11时
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/267ace52b64e1e7dfc5211e033255b7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfd66776565f049eb453c14fcaf79234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d311b8b003421d42aa6a3673d1e0baa.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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f5a0a6e5b3f489a7032ea5116c96024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](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,写出当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f5a0a6e5b3f489a7032ea5116c96024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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