如图,直线
交坐标轴于A,B两点,则
面积是( ).
![](https://img.xkw.com/dksih/QBM/2020/11/5/2586491337031680/2609685497380864/STEM/624d7e21306e41718ea1d7939fde9998.png?resizew=130)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15b498cf45fc24228b4124864de48a39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
![](https://img.xkw.com/dksih/QBM/2020/11/5/2586491337031680/2609685497380864/STEM/624d7e21306e41718ea1d7939fde9998.png?resizew=130)
A.3 | B.6 | C.2 | D.![]() |
更新时间:2020-12-14 14:51:26
|
【知识点】 几何问题(一次函数的实际应用)解读
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【推荐1】如图,在平面直角坐标系中,两条直线分别为y=2x,y=kx,且点A在直线y=2x上,点B在直线y=kx上,AB
x轴,AD⊥x轴,BC⊥x轴垂足分别为D和C,若四边形ABCD为正方形时,则k=( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/26/4bde9144-7628-422b-8ca7-23aebb6045ab.png?resizew=280)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/26/4bde9144-7628-422b-8ca7-23aebb6045ab.png?resizew=280)
A.![]() | B.![]() | C.![]() | D.2 |
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【推荐2】如图,在平面直角坐标系
中,过点
的直线
与直线
相交于点
,过动点
且垂于x轴的直线与
、
.的交点分别为C,D.当点C位于点D上方时,则n的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc0d82cb174d173b7e36937c3f99f591.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a528d113fdb2cded90a765015edd2774.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38426425f98e0b023daa44009cb125de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
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A.![]() | B.![]() | C.![]() | D.![]() |
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