甲、乙两人从
地出发,沿相同的路线前往
地,他们离
地的距离
(
)与甲行驶的时间
(
)之间的关系如图所示,根据图象解答下列问题:
、
两地相距___________千米;
(2)甲比乙早___________小时到达
地;
(3)求乙每小时行驶多少
?
![](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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5873c01192b7d33b7483f444f90b5b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73974d9845b4575801d4eba4d33dfe4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f42a97e3ae09c48e1d587f59af3621bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)甲比乙早___________小时到达
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(3)求乙每小时行驶多少
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73974d9845b4575801d4eba4d33dfe4e.png)
更新时间:2023-06-17 20:51:07
|
【知识点】 从函数的图象获取信息解读
相似题推荐
解答题-问答题
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【推荐1】【综合与实践】为促进同学间交流,丰富校园文化生活,增强班级团队意识和凝聚力.某学校将在操场上举办“绑腿跑”趣味运动会(每队有若干名队员排成一列,每相邻两队员的相邻腿用绑腿带绑在一起,立于起跑线后,队员通过协调配合在跑道上共同行进).赛前某班组织队员在比赛场地如图1所示的长方形
中进行适应性训练(把这组动作始终整齐划一的“绑腿跑”队员 表示为图中线段
,线段
可匀速向右或向左平行移动),当该“绑腿跑”队员从长方形
场地内平行于
边的某地出发向存匀速奔跑
之后到达终点
边,停留
,又向左返回匀速平行奔跑直至与
边重合.
![](https://img.xkw.com/dksih/QBM/2023/7/5/3274312347967488/3275230243676160/STEM/675c274403c94955ab57dedb6fd0a745.png?resizew=555)
【问题分析】(1)图2反映队员 奔跑时与
边的距离
(即线段
的长度)随时间
变化而变化的情况.
①这个变化过程中,自变量是__________,因变量是__________;
②当这组队员开始出发时,到
边的距离是__________
;
③当
时,该“绑腿跑”队员向右运动的速度为__________
.
【实践探索】(2)图3反映了队员在奔跑过程中形成长方形
的面积
随时间
变化的情况,①长方形
中
边的长为__________
;
②当
时,写出
与
之间的关系式为__________.
【实践反思】(3)“绑腿跑”趣味运动会正式比赛前,同学们对提高“绑腿跑”比赛成绩提出了两条建议:①口号和动作要协调一致;②选择身高相差不大的同学组队.针对这次活动,请你也提出一条合理化的建议.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc9f6524582d60e8a4ccbe45abf7713e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15b7a662db44251ff09d2bc4cd5574bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/2023/7/5/3274312347967488/3275230243676160/STEM/675c274403c94955ab57dedb6fd0a745.png?resizew=555)
【问题分析】(1)图2反映队员 奔跑时与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/862cdc0877f1cb1f02d76162d5e28e4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ecd76012d1b9c5e9fec6221e6e489c2.png)
①这个变化过程中,自变量是__________,因变量是__________;
②当这组队员开始出发时,到
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e15e00f40396e914d1d9955bd7785f1f.png)
③当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/500c7a673992ae28fcadb70d1198cc53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53afeaf21f93091b71608d21540be239.png)
【实践探索】(2)图3反映了队员在奔跑过程中形成长方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e53abbd672b82a02c4975f99fbbd2c37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7afcb5a44b8d9d1eb91d77b0ee775f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ecd76012d1b9c5e9fec6221e6e489c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e15e00f40396e914d1d9955bd7785f1f.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0928b12c1ef66462396e73a1e647ac23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
【实践反思】(3)“绑腿跑”趣味运动会正式比赛前,同学们对提高“绑腿跑”比赛成绩提出了两条建议:①口号和动作要协调一致;②选择身高相差不大的同学组队.针对这次活动,请你也提出一条合理化的建议.
您最近一年使用:0次
解答题-问答题
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适中
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【推荐2】A,B两地相距300km,甲由A地出发开车去往B地,乙同时由B地出发沿同一路线骑摩托车去往A地,甲的速度保持不变,乙出发2h后休息,然后按原速度继续行驶.设甲,乙与B地的路程分别为
,
,乙的行驶时间为
,
,
与x之间的函数图象如图所示,结合图象解答下列问题:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/29/18c7a778-ac58-45b6-838d-e913c46cfa4d.png?resizew=239)
(1)请求出甲的速度________km/h;
(2)求乙休息后继续行驶,
与x的函数解析式(CD),并写出自变量x的取值范围;
(3)当两车相距90km时,直接写出x的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/389d9978e0f4750f4d8cace58dd8c182.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ca0bf0268df21a4e0d3d854580edd1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b11be6dd6af544407a1d7da7225a7a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7266737d8592f186fd979b70a9a425d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb70b91469b45827289b84fab4fb13f1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/29/18c7a778-ac58-45b6-838d-e913c46cfa4d.png?resizew=239)
(1)请求出甲的速度________km/h;
(2)求乙休息后继续行驶,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb70b91469b45827289b84fab4fb13f1.png)
(3)当两车相距90km时,直接写出x的值.
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【推荐3】小明根据学习函数的经验,对函数y=
+1的图象与性质进行了探究.下面是小明的探究过程,请补充完整:
(1)函数y=
+1的自变量x的取值范围是 ;
(2)下表列出了y与x的几组对应值,请写出m,n的值:m= ,n= ;
(3)在如图所示的平面直角坐标系中,描全上表中以各对对应值为坐标的点,并画出该函数的图象.
(4)结合函数的图象,解决问题:
①写出该函数的一条性质:
②当函数值
+1>
时,x的取值范围是:
③方程
+1=x的解为:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eaad5fde7c4588fb39b560d9aa1f81c.png)
(1)函数y=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eaad5fde7c4588fb39b560d9aa1f81c.png)
(2)下表列出了y与x的几组对应值,请写出m,n的值:m= ,n= ;
x | … | ﹣![]() | ﹣1 | ﹣![]() | 0 | ![]() | ![]() | 2 | ![]() | 3 | ![]() | … |
y | … | ![]() | m | ![]() | 0 | ﹣1 | n | 2 | ![]() | ![]() | ![]() | … |
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/20/40652297-3dc7-48f9-96a2-3963434f4aa8.png?resizew=208)
(4)结合函数的图象,解决问题:
①写出该函数的一条性质:
②当函数值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eaad5fde7c4588fb39b560d9aa1f81c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b8503f4706b8321e4e79a87eadea84.png)
③方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eaad5fde7c4588fb39b560d9aa1f81c.png)
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