二次函数
的图象如图所示,下列结论正确的是( )
![](https://img.xkw.com/dksih/QBM/2020/1/16/2378319868534784/2378390077259776/STEM/e96c02479b9c4af7ab8fbda96147f481.png?resizew=188)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe6337d68cd5653767e3a1889b8b2e3.png)
![](https://img.xkw.com/dksih/QBM/2020/1/16/2378319868534784/2378390077259776/STEM/e96c02479b9c4af7ab8fbda96147f481.png?resizew=188)
A.![]() | B.![]() |
C.![]() | D.![]() |
18-19九年级上·浙江湖州·期末 查看更多[4]
浙江省湖州市德清县2018-2019学年九年级上学期期末数学试题2020年四川省成都市龙泉驿区九年级一诊(上学期期末)数学试题2020年四川省成都市龙泉驿区中考数学二诊试题(已下线)数学-(广东深圳卷)【试题猜想】2021年中考考前最后一卷(考试版+答题卡+全解全析+参考答案)
更新时间:2020-01-16 17:09:54
|
相似题推荐
单选题
|
适中
(0.65)
【推荐1】已知二次函数
的图象如图所示,有下列5个结论:①
;②
;③若
,
,
是抛物线上三点,则
;④
;⑤
;其中正确的结论有( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/25/3f998545-71cc-4796-92eb-166ec0d68bb6.png?resizew=155)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcc90b02a4cd1425aabfc192b1cdee17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77694c11ba40ec5c2fc4f6a05e31a048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbbcf3f7721240b8d2161f8c66a0fcf9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57db3bb891498c60dca108d93be0b7f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8128bcb325ec542f8bfc620e6173f943.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06fe64b3ed25c4a015759be2c9a97609.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da51248832d1ef41e0577d630969783d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da04f641c850a75a63031d5aed2e0625.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7a692bff303c9e197553b71c82b7d7e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/25/3f998545-71cc-4796-92eb-166ec0d68bb6.png?resizew=155)
A.1个 | B.2个 | C.3个 | D.4个 |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐2】抛物线y=ax2+bx+c的图象如图所示,她与x轴的两个交点的横坐标分别是﹣4和3,下列判断中:①a>0;②abc<0;③a﹣b+c<0;④b2﹣4ac>0;⑤a=b.其中正确的有( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/7/ba40edba-7faa-4c7e-b83d-17e6ee4b27aa.png?resizew=240)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/7/ba40edba-7faa-4c7e-b83d-17e6ee4b27aa.png?resizew=240)
A.2个 | B.3个 | C.4个 | D.5个 |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐1】已知二次函数
的图象过点
,与
轴的一个交点为
,且
,则下列结论:①若点
是函数图象上一点,则
;②若点
,
是函数图象上一点,则
;③
.其中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8352b2e643a7ce605334f1b0e572bfb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d23a19cc4dce17b9b15b16c458ab5ff7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9df2062940530232ab124a571e951ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb5ffa21fddc7c55d35f13435792b2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74a9171e50bbe4762e5ae8251825dbb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061813f1ec633c5c4c393c4de7938322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b524ed5ad41b8615edbac42b6d6174c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a08494d2f6a9113eec63f6373bd1bf43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f99df1a7b58018125b99578b779342.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a134e2ccd3cc5fa8cf9da498461776f3.png)
A.① | B.①② | C.①③ | D.②③ |
您最近一年使用:0次
单选题
|
适中
(0.65)
名校
【推荐2】已知抛物线
的顶点为
,与
轴的交点在线段
上,
,
.下列结论正确的有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
①该抛物线必过点
;②
或
.③
时,
随
的增大而增大.④
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4834265d3a2b9601f24ea804bdc7c7f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b21872d8f6a518e0a2993ccf7a795ed2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7da4aaaaf4687d9c61b25fa505ecb4e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bddf9eeea5e53f501642052ba0e72c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
①该抛物线必过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53a948d2f7732d7f03e986c63712089b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e544476b791b5ca1b28360c7786e9ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/369dc74f0fb40b9cac895b7d9a2076bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aab6480d8d53b1a0e898a8a4469b6f96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05d9e6c48fc40e185bf47665de9f77e0.png)
A.①②③④ | B.①③ | C.①② | D.①②③ |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐1】已知抛物线y=x2﹣x﹣3与x轴的一个交点为(m,0),则代数式m2﹣m+2017的值为( )
A.2017 | B.2020 | C.2019 | D.2018 |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐2】若抛物线
与x轴围成封闭区域(包含边界)内整点(点的横、纵坐标都是整数)的个数为k,则函数
的图象是如图所示的( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/8/d4552132-1693-4f39-bb30-f931c0f29047.png?resizew=289)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95e237d20288be1b1a68d40f44ed3069.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46a3d48878d4e43a69fc7b92c67df546.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/8/d4552132-1693-4f39-bb30-f931c0f29047.png?resizew=289)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次