1. If the income elasticity of demand for lard is -3.00, that means that:
a.lard is a substitute for butter
b.lard is a normal good
c. lard is an inferior good
d. more lard will be purchased when its price falls
2.Suppose that a 20 percent increase in the price of normal good Y causes a 10 percent decline in the quantity demanded of normal good X. The coefficient of cross elasticity of demand is:
a.negative and therefore these goods are substitutes
b.negative and therefore these goods are complements
c.positive and therefore these goods are substitutes
d.positive and therefore these goods are complements