CAS EC 101 Lecture Notes - Lecture 4: Demand Curve, Td Garden, Rela

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25 Jul 2017

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When building the supply-and-demand model, we drew lots and lots of curves and lines without saying anything about slope more than demand goes down and supply goes up . With the basics of supply-and-demand in our toolbox, we can now answer these questions. The slope of the demand curve, for example, tells us the change in price that cor- responds to a one-unit change in quantity demanded. The inverse of the slope slope = change in quantity demanded ( 1. For reasons to be ex- plained below, it is best to consider a slightly more nuanced concept than just the slope (or inverse of slope), which is what we will call elasticity: why slope is not enough. With elasticity, we want to capture the sensitivity of one variable to another. For example, the sensitivity of quantity demanded with respect to price. Example 1: when the price of a yacht is ,000,000, a rich consumer demands 2 yachts.

Related Questions

47. When a public transit system (such as a subway or bus line)raises its fares, it may experience an increase in total revenue.This suggests that demand is:
A) unstable.
B) price inelastic.
C) price elastic.
D) unit price elastic.
45. If the quantity demanded of agricultural output is veryunresponsive to a fall in price, the demand for agricultural outputis:
A) price elastic.
B) price inelastic.
C) positively sloped.
D) horizontal.
48. A constant price elasticity of demand curve is one whose:
A) slope is the same at every point on the curve.
B) price elasticity of demand is the same at every point on thecurve.
C) quantity is the same at every point on the curve.
D) price elasticity of demand and slope are the same at every pointon the curve.

49. Whenever supply increases, the resulting market price willalways be lower except:
A) when demand is perfectly price elastic (when the demand curve ishorizontal).
B) when demand is completely price inelastic (when the demand curveis vertical).
C) when supply is perfectly price inelastic (when the supply curveis vertical).
D) in the case of demand having unit price elasticitythroughout.

50. A demand curve that is perfectly inelastic:
A) will be vertical.
B) will be horizontal.
C) will be upward sloping.
D) has an elasticity equal to 1 everywhere on the curve.

greensquirrel343

a) What is the advantage of using the price elasticity rather than the slope of the demand curve or its inverse to measure the responsiveness in the quantity demanded of a commodity to a change in its price?

b) Why and how is the formula for arc price elasticity of demand different from the formula for point price elasticity of demand?

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1. The addition to the revenue obtained from firing an additional unit of labour is:

a. marginal revenue product

b. marginal physical product of labour

c.total product

d. marginal factor cost

2. The firm's demand curve for labour is:

a. the demand curve for the good produced divided by the price of the good

b.the marginal revenue product curve for labour

c.the marginal physical product curve for labour divided by the good

d. the marginal physical product curve for labour multiplied by the price of labour

3. If the price of the product is $1.50 and the marginal factor cost of an additional unit of input is $105, how many units of labour should be hired?

Labor input (workers/day)_______________________________-total physical product (output/day)

10 __________________________________________________500

11__________________________________________________600

12__________________________________________________690

13___________________________________________________760

14___________________________________________________800

a. 14

b.12

c.13

d.11

4. the price elasticity of demand for labour equals

a. the change in quantity demanded of labour divided by the change in the price of labour

b. the slope of the demand curve for labour

c. the percentage change in the price of labour divided by the percentage change in the supply of labour

d. the per cent change in the quantity demanded of labour divided by the percentage change in the price of labour

5. We would expect that a rise in labour supply will have a proportionately larger effect on the market wage rate when:

a. the supply for labour is elastic

b.the demand for labour is unitary elastic

c.the demand for labour is elastic

d.the demand for labour is inelastic

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CAS EC 101 Lecture Notes - Lecture 4: Demand Curve, Td Garden, Rela

CAS EC 101 Full Course Notes

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