如图,已知直线
与直线AC交于点A,与
轴交于点B,且直线AC过点
和点
,连接BD.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/11/0bd14808-561e-4117-a343-76aafac57a01.png?resizew=190)
(1)求直线AC的解析式.
(2)求交点A的坐标,并求出
的面积.
(3)在x轴上是否存在一点P,使得
周长最小?若存在,求出点P的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1689cc3aa875aa0ac053835f5b2ed268.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134fc3507b06c25a6cdf06b7ae11f055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5fcce10d4243fb2a8351db179c2c48.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/11/0bd14808-561e-4117-a343-76aafac57a01.png?resizew=190)
(1)求直线AC的解析式.
(2)求交点A的坐标,并求出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
(3)在x轴上是否存在一点P,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7fbd6b9f85c086ac95562fe45e8d969.png)
20-21八年级上·广东深圳·期末 查看更多[6]
广东省深圳市福田区福田区莲花中学2020-2021学年八年级上学期期末数学试题广东省深圳市宝安区宝安中学(集团)2021-2022学年八年级上学期期中数学试题甘肃省张掖市甘州区思源实验学校2021-2022学年八年级上学期期末数学试题四川省达州市渠县清溪中学2022-2023学年八年级上学期期末数学试题(已下线)专题19.38 一次函数题型分类专题(存在性问题)(基础篇)(专项练习)-2022-2023学年八年级数学下册基础知识专项讲练(人教版)广东省 深圳市光明区2022-2023学年八年级上学期期中模拟数学试题
更新时间:2020-12-10 20:59:31
|
相似题推荐
解答题-作图题
|
较易
(0.85)
【推荐1】下表中,
是
的一次函数,写出该函数表达式,并补全下表.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![]() | -3 | -2 | -1 | 0 | 1 |
![]() | 6 | 4 |
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
【推荐2】在一次实验中,小明把一根弹簧的上端固定,在其下端悬挂物体,如表是测得的弹簧的长度
与所挂物体的质量
的几组对应值,弹簧的最大量程为
.
(1)弹簧长度
与所挂物体质量
的关系式为______.
(2)不挂重物弹簧长为______
;当所挂重物为
时,弹簧长为______
.
(3)若弹簧的长度为
时,此时所挂重物的质量是多少?
![](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/d9928f62d827a592a87f187a83a4eb26.png)
所挂物体质量![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() |
弹簧长度![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2a8e2712494bc2022c30d37e395cf10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36194f80a360d846f6c94d1b4d3f34d7.png)
(2)不挂重物弹簧长为______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efa9fbcfb9595e2f031aa691db4564b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9997a6d13b5b99614463707666b057.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efa9fbcfb9595e2f031aa691db4564b.png)
(3)若弹簧的长度为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6b6bfbf75e132a612e45b0555992b49.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
名校
【推荐1】如图,已知直线
与x轴交于点A,与y轴交于点B,直线
上有一点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/18/04b93dc1-d460-43f1-9b9d-e9dc589a0d42.png?resizew=150)
(1)求点A、B、Q的坐标;
(2)若点P在x轴上,且
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78b5062be5cf27ae8089ad0c25d1b7c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bd092b7d9b0c3d76590c53f5a9d6bf1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/18/04b93dc1-d460-43f1-9b9d-e9dc589a0d42.png?resizew=150)
(1)求点A、B、Q的坐标;
(2)若点P在x轴上,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f13a139dbee8c9db03e4d485f9f96948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9763846b1131e1e3e2d741ad95d5bb0.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
【推荐2】如图,在平面直角坐标系中,
,矩形
的边
,直线
经过
两点.
(1)求直线
的解析式:
(2)若直线
与
轴交于点
,连接
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75e8a08b390fbb7e3987842bf24c050f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5d501afbd7542f2f724b658edf39af4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbdb21011ea821b91d539cb763aac649.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/7/027b8296-3eba-44d2-be29-c43155095e96.png?resizew=162)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15fb18163df0690365a0d2e7ee88f5a.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15fb18163df0690365a0d2e7ee88f5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d96645a3530e72d5d733d2c72147d340.png)
您最近一年使用:0次
解答题-作图题
|
较易
(0.85)
名校
【推荐1】如图,在平面直角坐标系中,
的顶点
,
,
均在正方形网格的格点上.
![](https://img.xkw.com/dksih/QBM/2022/11/16/3110784665124864/3111596516696064/STEM/00950691f2b041d6a513aaa5452c564a.png?resizew=226)
(1)画出
关于y轴的对称图形
;
(2)在
轴上找一点
,使
和最小(保留作图痕迹)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42a2b8b43e1fe82fc439d145e91b860c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a475d30f8a83feed0ed3c238bb24580.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f2aab2b5d023db00c50ba74445e3458.png)
![](https://img.xkw.com/dksih/QBM/2022/11/16/3110784665124864/3111596516696064/STEM/00950691f2b041d6a513aaa5452c564a.png?resizew=226)
(1)画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.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/0d3212a1eb1757ac956b40e5fc6e8005.png)
您最近一年使用:0次
解答题-作图题
|
较易
(0.85)
【推荐2】如图,河l同侧有一块直角三角形的绿化带
,
,
,
,
.A到河l的距离等于
的长度.需要用水管从河l上一点P处分别引水到A,B两处,并通过安装在这两处的喷水龙头灌溉草地.
![](https://img.xkw.com/dksih/QBM/2022/1/11/2899199953379328/2948801708646400/STEM/57be1289-d4d7-4666-94a5-4994dd41e042.png?resizew=224)
(1)请在河l上画出点P的位置,使得从点P向A,B两处引水所需的水管总长度最短;
(2)求至少需要水管多少米(连接处接头长度忽略不计).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d3c9ce32b721995f355eea411340e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/409e0af3233affdf9b4a03ac863ff4c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c48ded5a2ac67dfaa3c8f891b3fc7fec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abaeba15f3abdd877bc701af52c5cd9.png)
![](https://img.xkw.com/dksih/QBM/2022/1/11/2899199953379328/2948801708646400/STEM/57be1289-d4d7-4666-94a5-4994dd41e042.png?resizew=224)
(1)请在河l上画出点P的位置,使得从点P向A,B两处引水所需的水管总长度最短;
(2)求至少需要水管多少米(连接处接头长度忽略不计).
您最近一年使用:0次