如图,数轴上点
表示的数是0,点
表示的数是
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/7/4e34f8ba-e796-4abe-9e02-87a7a1db9a3e.png?resizew=134)
点
是数轴上一动点,表示的数是
,它与点
之间的距离
用
表示.
(1)填写下表,在平面直角坐标系内画出
关于
的图像;
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/7/e1108842-e058-46be-ba93-1b70d6609059.png?resizew=239)
(2)若
,则
的值是______;
(3)下列说法正确的序号是______;
①变量
是变量
的函数;
②
随
的增大而减小;
③图像经过第一、二、三象限;
④当
时,
有最小值.
(4)若
,则
的取值范围是______.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81fb134b2b48acc99213fff6ccfee65f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/7/4e34f8ba-e796-4abe-9e02-87a7a1db9a3e.png?resizew=134)
点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
(1)填写下表,在平面直角坐标系内画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![]() | … | ![]() | ![]() | ![]() | ![]() | ![]() | 0 | … |
![]() | … | 2 | 1 | ______ | 1 | 2 | ______ | … |
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/7/e1108842-e058-46be-ba93-1b70d6609059.png?resizew=239)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8076b511e27939c629762296b8cfd08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(3)下列说法正确的序号是______;
①变量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
③图像经过第一、二、三象限;
④当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba53065eb180a682305fddb95d14b62f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
(4)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b388771dbf7feff78d1f438a8fce14b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
更新时间:2024-02-09 10:41:25
|
相似题推荐
解答题-问答题
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【推荐1】如图,在数轴上点A表示的有理数为
,点B表示的有理数为6,点P从点A出发以每秒2个单位长度的速度沿数轴向点B方向匀速运动,当点P到达点B后立即返回,仍然以每秒2个单位长度的速度匀速运动至点A停止运动,设点P的运动时间为t秒.
(1)当
时,点P表示的有理数为________;
(2)当点P运动至点B时,求t的值;
(3)在点P由点A运动至点B的过程中,求:(用含t的式子表示)
①P,A两点间的距离;
②点P表示的有理数是多少?
(4)当点P与原点距离2个单位长度时,请直接写出所有满足条件的t的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3edbd40e04e2a943051fa83d6e511add.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/24/f9bbda0e-2f0f-4422-88dd-7cbe1e3885fb.png?resizew=359)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cbeede118c407a800b05757b9a1393e.png)
(2)当点P运动至点B时,求t的值;
(3)在点P由点A运动至点B的过程中,求:(用含t的式子表示)
①P,A两点间的距离;
②点P表示的有理数是多少?
(4)当点P与原点距离2个单位长度时,请直接写出所有满足条件的t的值.
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【推荐2】根据给出的数轴及已知条件,解答下面的问题:
(1)已知点A,B,C表示的数分别为1,
,
,观察数轴,A,B两点之间的距离为________.
(2)若将数轴折叠,使得点A与点C重合,则与点B重合的点表示的数是________;若此数轴上M,N两点之间的距离为2023(M在N的左侧),且当点A与点C重合时,点M与点N也恰好重合,则点M表示的数是________,点N表示的数是________.
(3)若数轴上P,Q两点间的距离为a(P在Q的左侧),表示数b的点到P,Q两点的距离相等,将数轴折叠,当点P与点Q重合时,点P表示的数是________,点Q表示的数是________(用含a,b的式子表示).
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/23/593ca11e-7d7d-4e61-9318-6000191dd607.png?resizew=303)
(1)已知点A,B,C表示的数分别为1,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a89117f3793e604ce6793f258369051b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81fb134b2b48acc99213fff6ccfee65f.png)
(2)若将数轴折叠,使得点A与点C重合,则与点B重合的点表示的数是________;若此数轴上M,N两点之间的距离为2023(M在N的左侧),且当点A与点C重合时,点M与点N也恰好重合,则点M表示的数是________,点N表示的数是________.
(3)若数轴上P,Q两点间的距离为a(P在Q的左侧),表示数b的点到P,Q两点的距离相等,将数轴折叠,当点P与点Q重合时,点P表示的数是________,点Q表示的数是________(用含a,b的式子表示).
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【推荐3】同一数轴上有点
、
、
分别表示数
、
、
,且
、
满足等式
,点c满足
,请回答下列问题:
(1)请直接写出
、
、
的值.
,
,
.
(2)点
、
、
同时开始在数轴上运动,若点
以每秒
个单位长度的速度向左运动,同时,点
和点
分别以每秒
个单位长度和
个单位长度的速度向右运动,假设
秒钟过后,若点
与点
之间的距离表示为
,点
与点
之间的距离表示为
,点
与点
之间的距离表示为
.![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ed5b023e21ce118aed46127e3f63946.png)
①
秒钟过后,
的长度为
用含
的关系式表示
;
②请问:
的值是否会随着时间
的变化而改变?若变化,请说明理由;若不变,请求出其值.
(3)有一动点
从点
出发,以每秒
个单位的速度向右运动,多少秒后,
到
、
、
的距离和为
个单位?
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaba25abd68133bdefc6d96676394cdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6696133ff0e0ec9939cc4b353088e20.png)
(1)请直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7277696e8d9f58c9ec28887783b317e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef1dbed0813c67a81a3a76c288a3f105.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0aaf618d9d72fe536f478a86e54b11e.png)
(2)点
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.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/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.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/764509115979e9958101808383672ec0.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/b79dd200766db27fb90d6bd1992cf658.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/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ed5b023e21ce118aed46127e3f63946.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
②请问:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f29193512e1c2dcaadd9aa99b6da99e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)有一动点
![](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/b8860d9787671b53b1ab68b3d526f5ca.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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45e61680ffc6f940bd5b8afda3ae9c59.png)
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【推荐1】若a,b满足|a|<|b|≤4,且a,b为整数.
(1)直接写出a,b的最大值;
(2)当a,b为何值时,|a|+b有最小值?此时,最小值是多少?
(1)直接写出a,b的最大值;
(2)当a,b为何值时,|a|+b有最小值?此时,最小值是多少?
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【推荐2】结合数轴与绝对值的知识回答下列问题:
(1)数轴上表示1和5的两点之间的距离是___________;表示
和3两点之间的距离是___________;
(2)一般地,数轴上表示数m和数n的两点之间的距离等于
.如果表示数a和
的两点之间的距离是2,请求出a的值.
(3)若点a在数轴上,则
的最小值是___________;
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/11/2d42069d-0dbd-4b13-b24e-762d73a5e173.png?resizew=289)
(1)数轴上表示1和5的两点之间的距离是___________;表示
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81fb134b2b48acc99213fff6ccfee65f.png)
(2)一般地,数轴上表示数m和数n的两点之间的距离等于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05e6e3d7843c3fc910405650ea4fbbe3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
(3)若点a在数轴上,则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f256c9895d8a369fb9429f8379c458a5.png)
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名校
【推荐3】阅读下面的材料:我们知道,在数轴上,
表示有理数a对应的点到原点的距离,同样的道理,
表示有理数a对应的点到有理数2对应的点的距离,例如,
,表示数轴上有理数5对应的点到有理数2对应的点的距离是3.
请根据上面的材料解答下列问题:
(1)请计算数轴上有理数
对应的点到有理数3对应的点的距离为______;
(2)填空:
表示与有理数a对应的点与有理数______对应的点的距离;如果
,那么有理数a的值是______;
(3)填空:如果
,那么有理数a的值是______.
(4)数轴上有一点表示数b,则
的最小值为______.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f8d40e257f9c446b8e30fa841b74bbd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3cdffae7eae7d724d57319774cb4723.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ac960734bba8815c6291f2d09a9bb37.png)
请根据上面的材料解答下列问题:
(1)请计算数轴上有理数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3aab28a20b5bf47040aaec03b1eb550.png)
(2)填空:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e32eeee2c54320f1b3c4d85bbab398c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d28d5acc35cc6d897a921547218a385a.png)
(3)填空:如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae39d80983eeed8e90bfde4c403a04b5.png)
(4)数轴上有一点表示数b,则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5089bdf8d5fc51d9b0ef7565b5dad909.png)
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【推荐1】如图,排球运动员站在点
处练习发球,将球从
点正上方
的A处发出,把球看成点,其运行的高度![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
与运行的水平距离![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
满足关系式
.已知球网与
点的水平距离为
,高度为
,球场的边界距
点的水平距离为
.
时,求
与
的关系式(不要求写出自变量
的取值范围);
(2)当
时,球能否越过球网?球会不会出界?请说明理由;
(3)若球一定能越过球网,又不出边界,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f71a41641aa0d0e45a3c03d3d2c1196b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7c6ca1769380f06048d726f82b1699d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7c6ca1769380f06048d726f82b1699d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bde291a1ab927cde501db661c42683e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a276be57f98560667fd0b54aed088437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b093e9d08351fa7127360de1b0f1888d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19d4166fee97516ad1b1d4759a8e4ce6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7a2357325c203a4d8495e3b6f9cb803.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)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7a2357325c203a4d8495e3b6f9cb803.png)
(3)若球一定能越过球网,又不出边界,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eabd5f3a86afe49dcd70571e2b96cfd.png)
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【推荐2】(1)解分式方程:
;
(2)解不等式
,并在数轴上表示解集.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0441bd77ebe49b3825ef5c3407981451.png)
(2)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b713c758a2343fc0d4e0f473a8ebcf9a.png)
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【推荐1】某地实施产业扶贫种植某种水果,其成本经过测算为25元/千克,投放市场后,经过市场调研发现,这种水果在上市的一段时间内的销售单价
(元千克)与时间
(天)之间的函数图像如图,且其日销售量
(千克)与时间
(天)的关系是:
(
,且
为整数).设日销售利润为
元.
(1)求销售单价
(元/千克)与时间
(天)之间的函数表达式;
(2)哪一天的销售利润最大?最大日销售利润为多少?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec439f9c9c2a872e33f3e38dd071de67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1079d6936828f3e6ce1636ff38d34a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/595044a7750ab4f84519041979c3d780.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/23/38e31059-787e-4389-ba85-0a74c73b1e4e.png?resizew=151)
(1)求销售单价
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(2)哪一天的销售利润最大?最大日销售利润为多少?
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【推荐2】、
两地之间的路程为2380米,甲、乙两人分别从
、
两地出发,相向而行,已知甲先出发5分钟后,乙才出发,他们两人在
、
之间的
地相遇,相遇后,甲立即返回
地,乙继续向
地前行. 甲到达
地时停止行走,乙到达
地时也停止行走,在整个行走过程中,甲、乙两人均保持各自的速度匀速行走,甲、乙两人相距的路程
(米)与甲出发的时间
(分钟)之间的关系如图所示:
(1)求甲、乙两人行走的速度;
(2)求甲从开始到停止用的时间;
(3)求乙到达
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
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【推荐3】甲、乙两地相距300千米,一辆货车从甲地出发到乙地,1小时后一辆轿车也从甲地出发向乙地,到达乙地后轿车马上沿原路返回甲地,如图:线段OA表示货车离甲地距离y(千米)与时间x(小时)之间的函数关系;折线BCDE表示轿车离甲地距离y(千米)与x(小时)之间的函数关系.轿车行驶CD段的速度与DE段的速度相同.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/23/9a210fb5-8b24-4e49-bb7f-5324892f5314.png?resizew=210)
(1)货车的速度为 千米/时;线段OA对应的函数解析式为: (
);
(2)求线段CD对应的函数解析式(不必写出自变量x的取值范围);
(3)求两车先后两次相遇的间隔时间;
(4)在两车行驶过程中,若两车距离不超过60千米,请直接写出x的取值范围.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/23/9a210fb5-8b24-4e49-bb7f-5324892f5314.png?resizew=210)
(1)货车的速度为 千米/时;线段OA对应的函数解析式为: (
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be48cd4158fb76190935ab143de02ba3.png)
(2)求线段CD对应的函数解析式(不必写出自变量x的取值范围);
(3)求两车先后两次相遇的间隔时间;
(4)在两车行驶过程中,若两车距离不超过60千米,请直接写出x的取值范围.
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