Question

Find the constant of variation k for the direct variation x -1 0 2 5 f(x) 2 0 -4 -10

Answer 1

k = -2

Explanation:

x -1 0 2 5

f(x) 2 0 -4 -10

ƒ(x) = kx

Substitute a pair of values for x and ƒ(x)

-10 = k×5

Divide each side by 5

k = -2

The constant of variation k = -2.