Ch. 2 Demand and Consumer Choice Flashcards
Individual Demand Curve
A graph that plots the quantity of an item that someone plans to buy at each price
Law of Demand
The tendency for a quantity demanded to be higher when the price is lower
Rational Rule for Buyers
Buy more of an item if the marginal benefit of one or ore is greater than or equal to the price
Market Demand Curve
A graph showing total quantity of each item demanded by the entire market at each price
Shift in Demand Curve
A moment of the demand curve itself
Increase in Demand
Shift to the right; at ever price quantity demanded rises
Decrease in Demand
Shifts to the left; quantity demanded is lower at each price
Normal good
A good in which higher income results in an increase of demand
Inferior good
A good in which higher income results in a decrease of demand (people with lower income buy more of it)
Complementary goods
Goods that go together; demand for one decreases, price for others increases
Substitute goods
Goods that replace each other; demand for one good increases if price of other increases
Network effect
Products or services become more useful to you as more people use it
Congestion effect
Products and services become less valuable as more people use them
Horizontal summation
Adding up demands to see the quantity at one price
Exoginist factor
Not pictured in the curve, shifts the whole line either way