ECO100Y1 Study Guide - Equilibrium Point, Demand Curve, Complementary Good

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purplemuskrat605

11 Aug 2013

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Demand is usually downward sloping and supply upward sloping. Intersection of demand and supply curves is the equilibrium point. Change in quantity demanded/quantity supplied are movements along the demand/supply curve and change in the demand/supply is a shift of the demand/supply curve. The demand/supply curve is the sum of individual demand/supply of the product. Factors that shift demand: taxes/subsidies, change in prices of related goods (substitutes/complementary goods, change in income, change in preferences. Factors that shift supply: prices of inputs (as prices rise, supply falls, number of firms (as firms rise, supply rises, technology (a new breakthrough increases supply, taxes/subsidies. Price floor is a minimum price the government sets for a product: usually causes shortage because qd>qs (e. g minimum wage) Price ceiling is a maximum price the government sets for a product: usually causes an excess supply as qs>qd. /subsidy (note: shift is vertically calculated: change in price of related goods, complementary goods: goods that complement each other.

Related Questions

Who bears the primary costs of a rent control program?

landlords

renters that get rent-controlled apartments

taxpayers

the wealthy

Assume the demand for sushi is Qd = 180 - 3P, where Qd is quantity demanded and P = price in dollars. The supply of sushi is Qs = 80 + 5P, where Qs is quantity supplied (and P is, again, price in dollars). A price of $20 would result in:

	A.	Excess supply of 60
	B.	Excess supply of 120
	C.	Excess supply of 140
	D.	Excess demand of 140

US agricultural price supports are politically popular because

They have no adverse impacts

The US would have food shortages without them

The benefits accrue to a large number of voters and the costs are paid by a small number of voters

The costs are spread out among millions of people

	A.	$15.50
	B.	$12.50
	C.	$10
	D.	$15

Price floors and ceiling prices:

cause the supply and demand curves to shift until equilibrium is established.

both cause surpluses.

interfere with the rationing function of prices.

A change in the price of a good leads to a change in ________, which leads to a ___________

quantity supplied; shift of the supply curve

supply; shift of the supply curve

quantity supplied; movement along the supply curve

When the supply of a product increases, this implies that

the price of the product first declined

more will be purchased at the same price

producers will be willing to accept a lower price for each unit sold

demand for the good must have increased

producers will offer less for sale at each possible price

If there is a excess demand for product X:

fewer resources will be allocated to the production of this good.

the price of the product will rise.

the supply curve will shift to the left and the demand curve to the right, eliminating the shortage.

the price of the product will decline.

Which of the following will occur when there is a simultaneous decrease in demand and a decrease in supply?

B and D both necessarily occur

An increase in equilibrium quantity

A and C both necessarily occur

An increase in price

A and D both necessarily occur

A decrease in price

A decrease in equilibrium quantity

Velcro is becoming more and more popular for a variety of uses, including as fasteners for shoes. What should happen to the equilibrium price and quantity for shoelaces as a result?

Both price and quantity should decrease.

Price should increase and quantity decrease.

Both price and quantity should increase.

Price should decrease and quantity increase.

Nothing.

If the government imposes a ceiling price on apartment rents, we would expect to observe all of the following except one. Which is the exception?

	A.	conversion of some apartment complexes to condos
	B.	a shortage
	C.	an increase in the number of new apartment complexes being built
	D.	lower maintenance of existing apartments
	E.	long waiting lists for apartment seekers

supply; movement along the supply curve

both cause shortages.

chocolatebadger640

Please review the following work and correct me if I have mixed up the concepts of movements and shifts of supply and demand curves. Feel free to copy and edit/correct my mistakes. I'll be waiting. Thanks in advance!!

Changes in price dictate movements along demand curves. When a decrease in demand or the quality demanded occurs it's a safe bet that it's correlated to a price increase, which in turn leads to a resultant surplus of that particular commodity in the marketplace. This is because decreased demand means less of that commodity being sold. On the other hand, a price decrease usually leads to an increase in the demand for a particular commodity, or an increase in sales, which in turn leads to a shortage of that commodity in the marketplace.

To shift the demand curve itself, changes need to occur in other aspects of the market beyond simply a change in the price of a commodity. For example, an increase in income means the consumers have more disposable income. With more disposable income, demand for commodities will increase, and results in a shift of the demand curve itself. In this example, the demand curve would shift right. On the opposite side of the coin, cost increases due to production or losses in efficiency may decrease the side of supply, shifting the demand curve to the left.

Analogous to shifts in the demand curve, shifts along a supply curve occur when prices change as well. When the cost to produce a commodity increases, supply drops, and the supply curve shifts to the left. If the cost of production drops, and supply increases, the supply curve shifts to the right as demand develops.

Pharmaceutical supply and demand is an easy way to understand these concepts.

Drug demand increases: Price decreases, supplies decrease.

Drug demand decreases: Price increases, supplies increase.

Drug supply increases: Production costs drop, demand drops.

Drug supply decreases: Production costs increase, demand increases.

"But where and how do movements and shifts occur in the above?"

purpleworm770

1. Which of the following would most likely increase aggregate supply?

a. an increase in the prices of imported goods

b. an increase in productivity

c. an increase in government subsidies to business

d. a decrease in net exports

2. One reason why the aggregate supply curve might shift to the left is that:

a. consumer incomes have increased

b. production costs have increased

c. government spending has increased

d. businesses have become more optimistic

3. A reduction in taxes may:

a. increase aggregate demand and decrease aggregate supply

b. increase aggregate demand and increase aggregate supply

c. decrease aggregate demand and decrease aggregate supply

d. decrease aggregate demand and increase aggregate supply

brownsea-lion330

ECO100Y1 Study Guide - Equilibrium Point, Demand Curve, Complementary Good

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