题干

将正比例函数y=3x的图象向下平移4个单位长度后,所得函数图象的解析式为(  )

A:y=3x+4

B:y=3x-4

C:y=3(x+4)

D:y=3(x-4)

上一题 下一题 0.0难度 选择题 更新时间:2017-07-07 11:52:55

答案(点此获取答案解析)

B

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