Answer:
x-2y=0 is a direct variation
Step-by-step explanation:
Direct variation is of the form
y= kx
Can we get the equation in that form
x-2y =0
Add 2y to each side
x-2y+2y =0_2y
x=2y
Divide each side by 2
x/2 = 2y/2
1/2x =y
Flip the sides
y = 1/2x
This is of the form y= kx where k = 1/2
x-2y=0 is a direct variation
Answer:

Step-by-step explanation:
x=unknown number




simplify the fraction so... -7/2
Answer:
x=20
Step-by-step explanation:
It's 35, I dont really need to work it out I know how to do it in my head lol but if you would like me too I will :)