如图,直角坐标系xOy中,A(0,5),直线x=﹣5与x轴交于点D,直线y=﹣
x﹣
与x轴及直线x=﹣5分别交于点C,E,点B,E关于x轴对称,连接AB.
①C(﹣13,0),E(﹣5,﹣3);
②直线AB的解析式为:y=
x+5;
③设面积的和S=S△CDE+S四边形ABDO,则S=32;
④在求面积的和S=S△CDE+S四边形ABDO时,琪琪有个想法:“将△CDE沿x轴翻折到△CDB的位置,而△CDB与四边形ABDO拼接后可看成△AOC,即S=S△CDE+S四边形ABDO=S△AOC”.
其中正确的结论个数是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/14/f2e790ae-00fd-4d30-994c-0f063b67123a.png?resizew=217)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69ee3c61d2298e75fc4f1643f8ebc2e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be2f3dc4f85b03d3af921154c60bf20e.png)
①C(﹣13,0),E(﹣5,﹣3);
②直线AB的解析式为:y=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/954795d1842974a705f9468f3b952ab1.png)
③设面积的和S=S△CDE+S四边形ABDO,则S=32;
④在求面积的和S=S△CDE+S四边形ABDO时,琪琪有个想法:“将△CDE沿x轴翻折到△CDB的位置,而△CDB与四边形ABDO拼接后可看成△AOC,即S=S△CDE+S四边形ABDO=S△AOC”.
其中正确的结论个数是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/14/f2e790ae-00fd-4d30-994c-0f063b67123a.png?resizew=217)
A.1个 | B.2个 | C.3个 | D.4个 |
更新时间:2020-07-22 07:26:46
|
相似题推荐
单选题
|
适中
(0.65)
【推荐1】如果一次函数的图象与直线
平行且与直线y=x-2在x轴上相交,则此函数解析式为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a02430f83e4f662e788d234da3c56ce2.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐2】由于持续高温和连日无雨,某水库的蓄水量随着时间的增加而减少,干旱持续时间t(天)与蓄水量V(万立方米)之间的函数关系图像如图所示,则V与t的函数关系式为( )
![](https://img.xkw.com/dksih/QBM/2018/6/5/1960908401827840/1967553439498241/STEM/0ee8c30633c44a0ebc9c8dd22a180849.png?resizew=148)
![](https://img.xkw.com/dksih/QBM/2018/6/5/1960908401827840/1967553439498241/STEM/0ee8c30633c44a0ebc9c8dd22a180849.png?resizew=148)
A.无法确定 | B.V=1200+20t(0≤t≤60) |
C.V=1200-20t | D.V=1200-20t(0≤t≤60) |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐1】如图,在平面直角坐标系中,
是直线
上的一个点,将
绕点
顺时针旋转
,得到点
,连接
,则
的值为( )
![](https://img.xkw.com/dksih/QBM/2021/8/27/2795064484175872/2795442085249024/STEM/d2be787de2344ff59f2681b0431673c8.png?resizew=162)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9851420be990bb099b1e13bb59ede401.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc9118cc77fc0a045337745890e50cad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f449cadb49859b80c31ef1f68bfe81b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a42da28be159399514cc6179a96e34b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fda3993f776064efd6580c603dc0c80b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fda3993f776064efd6580c603dc0c80b.png)
![](https://img.xkw.com/dksih/QBM/2021/8/27/2795064484175872/2795442085249024/STEM/d2be787de2344ff59f2681b0431673c8.png?resizew=162)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
名校
【推荐2】如图,在平面直角坐标系中,▱ABCD各顶点的坐标分别为A(1,﹣1),B(2,﹣3),C(4,﹣3),D(3,﹣1),若直线y=﹣3x+b与▱ABCD有交点,则b的取值范围是( )
![](https://img.xkw.com/dksih/QBM/2021/7/26/2772372964425728/2777596458205184/STEM/8c8f5efb-1795-4e6d-9c2a-82cd9c19ff21.png)
![](https://img.xkw.com/dksih/QBM/2021/7/26/2772372964425728/2777596458205184/STEM/8c8f5efb-1795-4e6d-9c2a-82cd9c19ff21.png)
A.3≤b≤8 | B.2≤b≤8 | C.2≤b≤9 | D.﹣3≤b≤9 |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐1】如图,
与
关于直线
对称,连接
交对称轴
于点
,若
,
,则下列说法不正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ee6e1d480ece7117e1f87ebf4bbeea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6024fd4532f5f981deac4582c799a6ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d777d15cd733338ecfd0ea63819f62c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7874439fc387b49b80e010ddc81c9786.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/17/51b97592-01de-4281-853d-541d6b72bdfc.png?resizew=170)
A.三角形![]() ![]() | B.![]() ![]() | C.![]() | D.连接![]() ![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐2】如图,直线l外有不重合的两点A、B.在直线l上求一点C,使得
的长度最短,作法为:①作点B关于直线l的对称点
.②连接
交直线l于点C,则点C即为所求.在解决这个问题时,没有用到的知识点是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab15f71acf24a48b4ea4efac5f09b718.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/943712a5e96b16cc15d775cc4687237e.png)
A.线段的垂直平分线性质 | B.两点之间线段最短 |
C.三角形两边之和大于第三边 | D.角平分线的性质 |
您最近一年使用:0次