Question

Write the direct variation of the equation if y varies directly with x and y = 45 when x = 9.
A. y = 5x
B. y = 1/5 x
C. y = -5x
D. y = -1/5 x

Answer 1

Substitute x and y with the values given. Check for the answer.

Answer 2

Okay, thanks.

Answer 3

check which equation satisfies x=9, and y = 45.

Answer 4

A is the answer?

Answer 5

Yes, it's a.

Answer 6

A is right since (45) = 5*(9).