已知
,
,当
取哪些值时,
?你是怎样做的?
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08ad03669794b8bdedc5683430f60e68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ac67e9a909472ab852d38d2ec66a1e1.png)
20-21八年级下·全国·课后作业 查看更多[1]
(已下线)【北师大版课时练习】 八年级下册 第二章 一元一次不等式与一元一次不等式组 5 一元一次不等式与一次函数
更新时间:2021-11-01 09:10:07
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【知识点】 根据两条直线的交点求不等式的解集解读
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解答题-问答题
|
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(0.85)
【推荐1】如图,直线
:
的图象与直线
:
的图象垂直,并且
经过点
,直线
交x轴于点C,两直线交点为B.(
:
,
:
,当
时,
)
(1)求直线
的解析式;
(2)求
的面积;
(3)当
时,直接写出x的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed06ccefffc165f9c77250cd28301d8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ff46134fdbd6e9e54ee471f80ed0a44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85cf797a625ef158d58f720f5955b852.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0c143e0781facdd4e4b6db9854e0ad2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34aac6235ae22d3c08a2a0defafdfca4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ce08b357f11ef44c3e8207ac574422a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d4cc51d393a94365f7008de5eae8879.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/13/13e7c14d-0582-4b2a-ac99-663031002326.png?resizew=158)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/276d0ecf6bfa0ef6270a493c86986b96.png)
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【推荐2】如图直线y1=kx+b经过点A(-6,0),B(-1,5).
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/17/1b4e508b-c70f-4123-bd5d-417e1e470497.png?resizew=195)
(1)求直线AB的表达式;
(2)若直线y2=-2x-3与直线AB相交于点M,则点M的坐标为(_____,_____);
(3)根据图像,直接写出关于x的不等式kx+b﹤-2x-3的解集.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/17/1b4e508b-c70f-4123-bd5d-417e1e470497.png?resizew=195)
(1)求直线AB的表达式;
(2)若直线y2=-2x-3与直线AB相交于点M,则点M的坐标为(_____,_____);
(3)根据图像,直接写出关于x的不等式kx+b﹤-2x-3的解集.
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