A consumer must spend all of her income on two goods (X and Y). In each of

Question:

A consumer must spend all of her income on two goods (X and Y). In each of the following scenarios, indicate whether the equilibrium consumption of goods X and Y will increase or decrease. Assume good X is an inferior good and good Y is a normal good.
a. Income doubles.
b. Income quadruples and all prices double.
c. Income and all prices quadruple.
d. Income is halved and all prices double.