Question

how would I write P is directly proportional to W squared as a variation equation

Answer 1

"directly proportional" means that as W goes up, P goes up

as W goes down, P goes down

Answer 2

if we just said "P is directly proportional to W", then

P = k*W

for some constant k

Answer 3

but W is squared, so the actual equation is

\[\Large P = k*W^2\]