配套习题- 待定系数法求函数解析式 -【青果学院】

1/4单选题

难度：

1.已知一次函数的图像经过两点：

,

则函数的解析式为（）

A
B
C
D

正确答案：Qw==

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

2/4单选题

难度：

2.已知一元二次函数经过点：

（）

A
B
C
D

正确答案：RA==

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

3/4单选题

难度：

3.若反比例函数的图像经过点

，则反比例函数解析式为（）

A
B
C
D

正确答案：Qw==

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

4/4单选题

难度：

4.已知二次函数的图像经过点

，且与

轴交与点

，

，则函数解析式为（）

A
B
C
D

正确答案：RA==

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