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==

6Kej5p6Q77ya5LqM5qyh5Ye95pWw55qE5LiA6Iis5byP5Li677yaPGltZyB3aWR0aD0xNTAgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvMkUvQUIvckJBQ0oxU2c0TWFpbkpRY0FBQUM2UXNWZDFRNzY2LnBuZyI+LOS7o+WFpeeCueeahOWdkOagh+W+l+WIsO+8mjxpbWcgd2lkdGg9OTggaGVpZ2h0PTYyIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvNjIvNkIvckJBQ0UxU2c0TWJ3Ni1BZUFBQURNU1YxT19VMjIwLnBuZyI+LOino+W+l++8mjxpbWcgd2lkdGg9NTAgaGVpZ2h0PTYyIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvMkUvQUIvckJBQ0oxU2c0TWFpeEl5Y0FBQUNtZmJiX1ZzNzY3LnBuZyI+LOaJgOS7peWHveaVsOino+aekOW8j+S4uu+8mjxpbWcgd2lkdGg9MTA1IGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzJFLzZEL3JCQUNKbFNnNE1hUWRVN2lBQUFDSzdKbjhQNDg4MC5wbmciPg==

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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