Question

Use the direct variation equation. If y=4 when x=-2. Find x when y=-5.

Answer 1

Explanation:

Y & X

Y = KX

K = Y/X

When Y = 4, X = -2

K = 4/-2

K = -2

Y = -2X

When Y = -5

-5 = -2X

X = -5/-2

X = 2 1/2