Choices Flashcards
Week 2
What is a demand curve?
This is a function that shows the quantity demanded at different prices.
What is the quantity demanded?
The quantity that buyers are willing and able to buy at a certain price.
What is the law of demand?
typically negatively sloped
The higher the price the lower the quantity demanded.
What is consumer surplus?
The difference between the price is a consumer is willing to pay for a certain quantity and the market price (Consumers gain from exchange)
How do you find the total consumer surplus?
The area beneath the demand curve and above the price.
What are the six demand shifters? (6 marks)
Tastes
Income
Population
Price of Substitutes
Price of Complements
Expectations
How does TASTE shift demand?
Changes in taste increase or decrease the demand for a certain good.
How does INCOME shift demand?
The reacher people get the more stuff they buy.
What is it called when an increase in income increases demand for a good?
Normal good
What is it called when a decrease in income decreases the demand for a good?
Inferior good
How does POPULATION shift demand?
An increase in population typically increases demand.
Shifts in subpopulations change the demand for certain goods e.g. aging and young.
How do PRICES OF SUBSTITUTES shift demand?
A substitute = dupe
A decrease in the price of a substitute will decrease the demand for the other good.
How do PRICES OF COMPLEMENTS shift demand?
A complement is a good that goes together with another (e.g. iPhone + Airpods)
A drop in the price of a complementary good will increase its demand.
How do EXPECTATIONS shift demand?
If the future supply is predicted to decrease, the current demand of the good will increase.
What is a supply curve?
This is a function that shows the quantity supplied at different prices.