Does the equation represent a direct variation? If so, find the constant of variation.

Question

2x - 4y = 0

A.
yes; k = -4

B.
no

C.
yes; k = 1/2

D.
yes; k = -1/2

Answer 1

If expressed in terms of y ...

4y = 2x
y = (2/4)x = (1/2)x

so yes, with k = 1/2