A)The utility function u(x,y) = min(x + 2y,2x +y).
i)Graph x +2y = 2x + y
ii)Graph x +2y = 12
iii)Graph 2x +y = 12

How you go about to solve it? (i'm pretty bad with math, yet i am taking economics..contradicting i know)

B) Can anyone tell me how to graph a utility function for perfect complement.
For example U(x,y) =xy
where P(x) =1; P(y)=2 and m = 40
How do you plot an indifference curve that gives a utility of 150?