5x-7y=0 x与y成不成正比例?
问题描述:
5x-7y=0 x与y成不成正比例?
答
5x-7y=0
5x=7y
x=7/5y
x与y成正比例
5x-7y=0 x与y成不成正比例?
5x-7y=0
5x=7y
x=7/5y
x与y成正比例