Question

If y varies directly with x, find the constant of variation with x = 4 and y = - 24

A: -6
B: 4
C: -96
D: 6

Answer 1

A: -6

Explanation:

A direct variation is y =kx

We know x =4 and y = -24

Substituting in

-24 = 4k

Dividing by 4

-24/4 = 4k/4

-6 =k

The constant of variation is -6