Please help me solve this variation models

Question

Write the variation model that corresponds to each statement.

a) W varies directly with x.

b) A varies inversely with the square of b.

c) Z varies jointly with x and y.

d) P varies directly with the square root of f and inversely with g.

Answer 1

W=kx

A=k/b^2

Z=kxy

P=k(sqrf)/g