1. Demand Section 1 – Nature of Demand
Chapter 4
Demand
Section 1 – Nature of Demand

2. Review with Partner 1. What is the fundamental economic problem?
2. What are the three productive resources?
What is marginal analysis?
What are opportunity costs and explain how we calculate them using comparative advantage?
What does it mean to be producing inside the PPC?
How many TV’s are in your house?
Name as many Disney films as you can.

3. Quantity Demand
The amount of a good or a service that a person is willing and able to buy at each particular price

4. Law of Demand
Increase in a goods price causes a decrease in the quantity demanded.
A decrease in a goods price causes an increase in the quantity demanded.
INVERSE RELATIONSHIP
Price
Quantity Demanded

5. Income / Substitution Effect
Income Effect –
-when prices rise, our purchasing power decreases
-causes us to demand less
Vice Versa
Substitution Effect –
the tendency of consumers to substitute a similar, lower priced product for another product.
Example – Dr. Pepper and Dr. Skipper

6. Diminishing Marginal Utility
The more units consumed of one item, the amount of satisfaction received declines.
A New Car

7. Demand Curve Plots the information on the demand schedule. PRICE
Quantity Demanded

8. Pay attention boys and girls!
Bartz’s Demand Slope
Slope = Change in Y / Change in X
Pay attention boys and girls!

9. Slope Slope = rise = change in vertical axis or y
run change in horizontal axis or x
Example - slope = -5 25
What does this mean?
If my price is lowered 5 $ then there would be 25 more products demanded by the public.

10. Determinants of Demand
Consumer taste and preferences
Potential consumers
Money income
Complementary and substitute Goods
Price Expectations

11. Ticket out the door!
Write about a time when you used the substitution effect.
(-use complete sentences)
Write about a time when you experienced the law of dominishing marginal utility.
(-use complete sentences)

12. Review With your Partner
1. What is the relationship between Price and Quantity Demand?
2. Explain Slope and why would a company calculate their slope?
3. Explain what an elastic product is?
4. Explain what an inelastic product is?
5. Draw the demand curve with your elbow.
6. What are the 5 determinants demand?
7. How many uncles and aunts do you have?
8. Name as many California colleges you can?

13. Supply A willingness to sell a product at a certain price
Law of Supply – People will sell more of a product at a higher price than a lower a price.

14. Supply Schedule PRICE AND QUANTITY SUPPLIED ARE DIRECTLY RELATEDQS
PRICE AND QUANTITY SUPPLIED ARE DIRECTLY RELATED
As one goes up the other goes up!

15. Supply Curve Plots the information from the supply schedule
Price
Q/S

16. Determinants of Supply
Resource Prices
Production Technology
Labor Productivity
Taxes, Subsidies, Regulations

17. Increase in Supply
Curve shifts to the right
Price
Q/S

18. Decrease in Supply
Shift to the Left
Price
Q/S

19. Combine Demand and Supply
Price
Market Equilibrium D
Quantity

20. Market Equilibrium Point that supply meets demand…
Point that the price is determined… S
The supplier should make 1000 and sell the item for 5$ 5
Price D
1000
Quantity