CH. 2 Demand, Supply, and Equilibrium Prices Flashcards
Demand
The functional relationship between the price of a good or service and the quantity demanded by consumers in a given time period, all else held constant.
Functional Relationship
A relationship between variables, where the value of one variable, determines the value of the other, the dependent variable.
(9) Nonprice Factors influencing Demand
- Tastes and Preferences 2. Income 3. Normal Goods 4. Inferior Goods 5. Prices of related Goods 6. Substitute Goods 7. Complimentary Goods 8. Future Expectations 9. Number of Consumers
Normal Good
A good for which consumers will have a greater demand as their incomes increase, all else held constant, and a smaller demand if their incomes decrease.
Inferior Goods
A good for which consumers will have a smaller demand as their incomes increase, and greater demand if their incomes decrease, all factors held constant.
Substitute Goods
Two goods, X and Y, are substitutes if an increase in the price of a good Y causes consumers to increase their demand for good X or if a decrease in the price of good Y causes consumers to decrease their demand for good X. EX. Bottled Water.
Complementary goods
Two goods X and Y are complementary if an increase in the price of good Y cause consumers to decrease their for good X or if a decrease in good Y causes consumers to increase their demand for good X. EX. Peanut butter and Jelly
Individual Demand Function
The function that shows the variables that influence the quantity demanded of a particular product by an individual consumer.
Market Demand Function
The function that shows that variables that influence the quantity demanded of a particular product by all consumers in the market and is affected by the number of consumers in the market.
Demand Curve
The graphical relationship between the price of a good and the quantity consumers demand, with all other factors held constant.
Demand Shifters
The variables in a demand function that are held constant when defining a given demand curve, but that would shift the demand curve if their values changed.
Negative Relationship (Inverse)
A relationship between two variables, where an increase in the value of one variable causes a decrease in the value of the other variable. (downward sloping line)
Change in Quantity Demanded
The change in quantity consumers purchase when the price of the good changes. Movement along the demand curve.
Change in Demand
The change in quantity purchased when one or more of the demand shifters change. Shift in the entire demand curve.
Horizontal Summation of indv. demand Curves
the process deriving a market demand curve by adding the quantity demanded by each individual at every price to determine the market demend at every price.