Answer:
Blank 1: Demand
Blank 2: Right
Blank 3: Increase
Blank 4: Increase
Explanation:
Good Y is a normal good. If the average income of those who buy good Y rises, the demand curve for good Y will shift right resulting in a(n) increase in the equilibrium price of Y and a(n) increase in the equilibrium quantity of Y.
This is explained from the graph given below: