The consumer's utility function is u(x1,x2) = (x1) (x2)^2
(a) Graph his budget constraint for p1 = 3, p2 = 2 and M = 900, and write down the equation for his budget line.
(b) Graph the locus of points for which the MRS of good 2 for good 1 is equal to 1, and the locus of points for which the MRS is equal to 2.