Shift demand curves Price of Novels When income increases, the demand curve shifts to the right When income decreases. the demand curve shifts to the left Incorne= Income= Income= $20000$30,000540,000 0 0 1013151620 25 30 Quantity of Novels Purchased When a variable that is not named on either axis changes, the curve shiftsShift Demand Curves Price of Novels Quantity of Novels Purchased 0 2 4 6 8 1 0 1 2 0 5 1 0 13 16 1 5 2 0 2 5 3 0 When income increases, the demand curve shifts to the right. When income decreases, the demand curve shifts to the left. D2 Income= $40,000 D1 Income= $30,000 D3 Income= $20,000 When a variable that is not named on either axis changes, the curve shifts