如图所示,二次函数
为常数,
的图象与
轴交于点
.有下列结论:①
;②若点
和
均在抛物线上,则
;③
;④
.其中正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e04702f417fc63d6c899bd9b1c1a3fe6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f28b08682efa2692b052f64fe1448fce.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/520f445dad5a6c303bf75555ef44f4af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea19a3e086e324698865419645226fb9.png)
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A.1个 | B.2个 | C.3个 | D.4个 |
2023·四川广安·中考真题 查看更多[12]
2023年四川省广安市中考数学真题(已下线)专题08 二次函数图象性质与综合应用(44题)-学易金卷:2023年中考数学真题分项汇编(全国通用)(已下线)第22单元02基础练(已下线)专题22.19 二次函数图象判断各项系数和式子的符号(直通中考)-2023-2024学年九年级数学上册基础知识专项突破讲与练(人教版)(已下线)专题22.14 二次函数y=ax2+bx+c(a≠0)的图象与性质(直通中考)(培优练)-2023-2024学年九年级数学上册基础知识专项突破讲与练(人教版)(已下线)专题10 二次函数-学易金卷:三年(2021-2023)中考数学真题分项汇编(四川专用)(已下线)2023年四川省遂宁市中考数学真题变式题6-10题(已下线)2023年四川省广安市中考数学真题变式题6-10题陕西省宝鸡市陇县2023-2024学年九年级上学期期中数学试题江西省九江市修水县2023-2024学年九年级上学期期末数学试题(已下线)重难点06+二次函数图象性质及其综合应用(2考点8题型)01山东省临沂市蒙阴县蒙阴第三中学2023-2024学年九年级下学期期中数学试题
更新时间:2023-06-16 10:48:26
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【推荐1】如图,已知抛物线y=ax2+bx+c与x轴交于A,B两点,顶点C的纵坐标为﹣2,现将抛物线向右平移2个单位,得到抛物线y=a1x2+b1x+c1,则下列结论:①b>0;②a﹣b+c<0;③阴影部分的面积为4;④若c=﹣1,则b2=4a.其中正确的个数为( )
![](https://img.xkw.com/dksih/QBM/2019/3/30/2171829139423232/2177077120163840/STEM/64c52e99d52a459c87ccc505737955a7.png?resizew=143)
![](https://img.xkw.com/dksih/QBM/2019/3/30/2171829139423232/2177077120163840/STEM/64c52e99d52a459c87ccc505737955a7.png?resizew=143)
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【推荐2】抛物线
的顶点为
, 与
轴的一个交点
在点
和
之间,其部分图象如图,则以下结论: ①
; ②当
时,
随
增大而减小; ③
;④若方程
没有实数根,则
; ⑤
,其中正确结论的个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fdc829ee5eb97cd5d926b246468b15a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5037a7f4f545c2d4461fa629d23a41f.png)
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【推荐1】如图,抛物线
与
轴交于
、
两点,与
轴交于点
,
,点
的坐标为
,顶点为
,对称轴与
轴交于点
,则下列结论:①
,②
,③
,④当
时,在线段
上一定存在点
,使得
为等腰直角三角形,其中正确的结论的有( )
![](https://img.xkw.com/dksih/QBM/2023/4/28/3226085220614144/3227833592774656/STEM/045d50dda7ef457f8dcec5f2a3b146cf.png?resizew=137)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
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【推荐2】如图所示,二次函数y=ax2+bx+c的图象与x轴的交点的横坐标分别为﹣3和1,则下列结论:①abc<0;②b2﹣4ac>0;③a+b+c<0;④方程ax2+bx+c=0的解是x1=﹣3,x2=1;⑤不等式ax2+bx+c>0的解集是﹣3<x<1.其中正确的有几个?( )
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