Question

Suppose that y varies directly with .x, and y=-8 when x=2.

(a) Write a direct variation equation that relates x and y.
Equation:
(b) Find y when x = 5.
OC

Answer 1

y = -4x

b. y = -20.

Explanation:

y = kx

-8 = 2k

k = -8/2

k = -4

y = -4x

y = kx

y = -4 × 5

y = -20