Supply and Demand

Vocabulary

ceteris paribus

all other things held equal; all other factors or variables held constant

complement

a good that is used together with another good to satisfy a final demand

curve

a line on a graph showing the relationship between two variables

demand

the desire and ability of consumers for a good at a range of prices

demand curve

a graph that shows the relationship between the quantity of a good or service and prices that consumers are willing and able to buy.

demand schedule

a table that shows the quantity demanded of a good at different prices which can also be used to show the maximum price that a consumer would be willing to pay

disequilibrium

when supply and demand do not meet at the same point and are off-balance

equilibrium price

the price at which quantity demanded equals quantity supplied

inferior good

good that consumers purchase less of when income rises

law of demand

an economic law that states that as the price of a good decreases the quantity demanded by consumers will increase, all other things being equal

law of supply

the observation that as the price of a good or service increases the quantity supplied will increase, all other things being equal

market

a group of buyers and sellers of a particular good or service.

market equilibrium

the point at which the quantity of a good consumers are willing to buy (demand) equals the quantity of that good that producers are willing to offer for sale (supply)

normal good

a good that consumers will buy more of when they have an increase in income

quantity demanded

the amount of a good that buyers are willing and able to purchase

quantity supplied

the quantity of a good or service that producers offer for sale at a specific price

shortage

the amount by which the quantity demanded of a good by consumers is greater than the quantity supplied by producers at a given price

substitute

a good which performs a similar function as another good

supply

the total amount of a specific good or service that is available to consumers

supply curve

a graphical representation that shows the quantity supplied at different prices, which can also be used to show the maximum amount of a good or service that an individual producer (or the supply side of the market) would be willing to produce

supply schedule

a table that shows the relationship between the price of a good and the quantity supplied

surplus

the amount by which the quantity of a good offered for sale by producers in a market exceeds the quantity demanded by consumers