抛物线y=ax2+bx+c(a≠0)与x轴的一个交点坐标为(2,0),对称轴是直线x=1,其图象的一部分如图所示,对于下列说法:其中正确的是( )
①抛物线过原点:
②a﹣b+c<0:
③2a+b+c=0;
④抛物线顶点为(1,
):
⑤当x<1时,y随x的增大而增大
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/2/d89766f3-9b1e-4ba6-9c70-aa0fec5866eb.png?resizew=110)
①抛物线过原点:
②a﹣b+c<0:
③2a+b+c=0;
④抛物线顶点为(1,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebdc3761a46608ac1a8ca5b5ab52a1c0.png)
⑤当x<1时,y随x的增大而增大
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/2/d89766f3-9b1e-4ba6-9c70-aa0fec5866eb.png?resizew=110)
A.①②③ | B.①③④ | C.①④⑤ | D.③④⑤ |
更新时间:2020-01-19 09:57:54
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