Find the constant of variation k.
m varies directly with n; m = 144 when n = 8.
This is a Direct Variation
A Direct Variation is a function in the form; y = kx, k ≠ 0, where it is said
that y varies directly as x, or y is proportional to x.
so
m = kn, m = 144, and n = 8
144 = 8k
144 8k
____ = ____
8 8
18 = k ------> Answer