# I don't know how to do these at all can someone help? I struggle to apply the formula that was given which is y=kx
# 4.let a = the constant of proportionality x = a x p x r^2 27 = a x 150 x 3^2 27 = a x 1350 k = 27/1350 k = 0,02 x = a x p x r^2 = 0,02 x 150 x 3^2