y is inversely proportional to d2 when d = 10, y = 4 d is directly proportional to x2 when x = 2, d = 24 Find a formula for y in terms of x. Give your answer in its simplest form.
y=k/d2
substituting:4=k/102
4=k/100
400=k
d=nx2
substituting:24=n x 22
24=4n
n=6
Eq1:y=400/d2
Eq2:d=6x2
y=400/(6x2)
y=400/36x4
y=200/13x4
