Price elasticity is the same as the slope of the curve.（)

Price Elasticity of Demand(厦门大学2008研)

The price elasticity of demand curve faced by a competitive firm is ______.

A．0.

B．-1.

C．-∞.

D．1.

The price elasticity of demand, for a given product, indicates______.

A．how far businessmen can stretch their fixed costs

B．the degree of competition in a market

C．the extent to which a demand curve shifts as incomes change

D．how responsive quantity demanded to price changes is

The price elasticity of demand for hamburger is______.

A．the change in the quantity demanded of hamburger when hamburger increases by 30 pence per pound

B．the percentage increase in the quantity demanded of hamburger when the price of hamburger falls by 1 per cent per pound

C．the increase in the demand for hamburger when the price of hamburger falls by 10 per cent per pound

D．the decrease in the quantity demanded of hamburger when the price of hamburger falls by 1 per cent per pound

A．-0.25

B．0.25

C．-4

D．4

Question 3

A plastics monopolist faces the demand curve P=180 - Q, where Q is measured in thousands of pounds per year and P is measured in dollars per pound. Marginal cost is constant at MC=＄60 per pound.

(a)Find the monopolist's profit-maximizing price and quantity.

(b)What is the elasticity of demand at the profit-maximizing price？

弹性、收入弹性、交叉弹性(elasticity，income elasticity，cross elasticity)

收入弹性(income elasticity)

If a good is a luxury, its income elasticity of demand is______.

A．positive and less than 1

B．negative but greater than — 1

C．positive and greater than 1

D．zero

弹性的决定因素(determinants 0f elasticity)

The characteristic of elasticity is______ distinguishes rubber from plastic and fibers.

A．what

B．that

C．which

D．where