Question

Which equation represents a direct linear variation?

A) 7=x+2
B) y=1/2x
C) y=1/x
D) 7=x^2

Answer 1

B

Explanation:

The equation representing direct linear variation is

y = kx ← k is the constant of variation

The only equation in this form is

y =
`(1)/(2)` x ( with k =
`(1)/(2)` )