solve variation problem.
if y varies directly as x and inversely as m^2 and r^2 and y=5/3 when x=1, m=2 and r=3, find y when x=3, m=1 and r=8
if y varies directly as x and inversely as m^2 and r^2 and y=5/3 when x=1, m=2 and r=3, find y when x=3, m=1 and r=8