Supply And Demand Flashcards
Supply and demand model
Model of how a competitive market behaves
What are the five key elements of a supply and demand model?
- Demand curve
- Supply curve
- Set of factors that cause the demand curve to shift and the set of factors that cause the supply curve to shift
- Market equilibrium
- The way the market equilibrium changes when the supply curve or demand curve shifts
Demand schedule
Table showing how much of a good consumers will want to buy at different prices
Quantity demanded
Actual amount of a good/service consumers are willing to buy at some specific price
Demand curve
Graphical representation of the demand schedule, it shows the relationship between quantity demanded and price
Law of demand
Says that a higher price for a good /service, other things equal, leads people to demand a smaller quantity of that good/service
Shifts of the demand curve
Change in ten quantity at any given price, represented by the shift of the original demand curve to a new position, denoted by a new demand curve
Movement along the demand curve
Change in the quantity demanded of a good arising from a change in the goods price
What are the 5 principle factors that shift the demand curve for a good/service
- Changes in the prices of related goods/services
- Changes in income
- Changes in tastes
- Changes in expectation
- Changes in number of consumers
Substitutes
If a rise in the price of one of the goods leads to an increase in demand for the other good
Complements
If a rise in the price of one good leads to a decrease in demand for the other good
Normal good
Demand for these increase when consumer income rises
Inferior goods
When a rise in income decreases the demand for the good
Individual demand curve
Illustrates the relationship between quantity demanded and price for an individual consumer
Quantity supplied
Actual amount of a food or service people are willing to sell at some specific price