Write an equation to describe the variation. Use k for the constant of proportionality.

Question

w varies inversely as z³

Answer 1

w varies inversely as cube of z

w = k/z^3

had it been varies directly then w =kz^3

but inversely puts z^3 in the denominator

Answer 2

wz³ = k

z³ = k / w

w = k / z³