You consume two goods, X and Y . On Tuesday, the price of Y (not
X!!) rises. On Wednesday,
there are no new price changes, but your income rises until you are
just as happy as you were
on Monday.
a) Draw your budget lines and optimum points on all three days.
Label the optima M, T and
W.
b) In terms of the locations of the optimum points, what would it
mean for Y to be a Giffen
good?...