将抛物线
向上平移3个单位,向左平移4个单位后所得到的新抛物线
的对称轴是直线( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65e53aa385e05eb945417b26c9b49051.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b4d2174f411d9db6ab7b2aea47818cb.png)
A.x=1 | B.x=﹣2 | C.x=﹣5 | D.x=4 |
更新时间:2022-09-30 15:41:05
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【推荐1】将如图所示抛物线先向右平移1个单位,再向下平移2个单位,得到的函数图象的表达式是( )
![](https://img.xkw.com/dksih/QBM/2021/12/3/2864695553187840/2867549049380864/STEM/0db32b32-04cf-4d3f-9e1b-955ac055341d.png?resizew=285)
![](https://img.xkw.com/dksih/QBM/2021/12/3/2864695553187840/2867549049380864/STEM/0db32b32-04cf-4d3f-9e1b-955ac055341d.png?resizew=285)
A.![]() | B.![]() |
C.![]() | D.![]() |
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【推荐2】平面直角坐标系中,点P的坐标为(0,﹣1),将抛物线y=x2﹣4x+2沿水平方向或竖直方向平移,使其经过点P,则平移的最短距离为( )
A.3 | B.2 | C.![]() | D.1 |
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【推荐1】对于抛物线
,下列结论:
(
)抛物线的开口向下;
(
)对称轴为直线
;
(
)顶点坐标为
;
(
)当
时,
随
的增大而减小.
其中正确结论的个数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41aafdd1fb2e21cdd0cf386aa9af9c12.png)
(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/881fe2df23c5a0fe1d1fecbe9ffa55fb.png)
(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fde64f4d3c38e43fbdee24eadc4b0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
其中正确结论的个数为( )
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】将抛物线
向右平移3个单位,再向上平移1个单位,则平移后的抛物线的解析式是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e715696b95de4901d2bf8b0757cdeb6.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次