In order to find which equation does not represent direct variation, we must arrange each equation into the form
y=mx+b
In direct variation, b , the y-intercept, is 0
in y-intercept is not 0 , then it is not direct variation
1. y-3x=0
y=3x+0
b is 0, so its direct variation.
2.y+2=1/2x
y=1/2x -2
here b is 2, so this is not direct variation.
3. y/x =2/3
y=2/3 x +0
here b is 0, so its direct variation
4. y=x/17
y=x/17 +0
so b is 0, its direct variation
Answer: option B , y+2=1/2 x