配套习题- 利用比例关系确定反比例函数解析式 -【青果学院】

1/5单选题

难度：

1.

已知与²成反比例，当=3时，=4，则函数与之间的函数关系式为（）

A
B	−
C	−
D

正确答案：QQ==

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

2/5单选题

难度：

2.

一个正比例函数与一个反比例函数图象交于点P（2，6），则这个正比例函数的关系式是( ), 这个反比例函数的关系式是（）

A
B
C
D

正确答案：QQ==

PGRpdj48aW1nIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvMDQvNkEvckJBQ0ZGTVBCQlR4OERVTkFBQWN4bEJjSkNBNTAyLnBuZyIgZGF0YS1ja2Utc2F2ZWQtc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC8wNC82QS9yQkFDRkZNUEJCVHg4RFVOQUFBY3hsQmNKQ0E1MDIucG5nIiBhbHQ9IiIgc3R5bGU9IndpZHRoOiAzMzhweDsgaGVpZ2h0OiAxNTlweDsiPjxicj48L2Rpdj4=

3/5单选题

难度：

3.反比例函数𝑦=𝑘/𝑥的图象与正比例函数y=3x的图象交于点P（m，6），则反比例函数的关系式是( )

A
B
C
D

正确答案：Qg==

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

4/5单选题

难度：

4.

已知点P在正比例函数的图象上，且横坐标为2. 若将点P向右平移1个单位后得点P′，则图象经过点P′的反比例函数的关系式是( )

A
B
C
D

正确答案：RA==

PGRpdj48aW1nIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvMDQvNkIvckJBQ0ZGTVBCSDd5WHNpMUFBQVlNaGpZaVdnODQ0LnBuZyIgZGF0YS1ja2Utc2F2ZWQtc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC8wNC82Qi9yQkFDRkZNUEJIN3lYc2kxQUFBWU1oallpV2c4NDQucG5nIiBhbHQ9IiIgc3R5bGU9IndpZHRoOiA0NTZweDsgaGVpZ2h0OiAxMzFweDsiPjxicj48L2Rpdj4=

5/5单选题

难度：

5.正比例函数与反比例函数图象都经过点（1，4），在第一象限内正比例函数图象在反比例函数图象上方的自变量

的取值范围是（　　）

A
B	0＜＜1
C	＞4
D	0＜＜4

正确答案：QQ==

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