Class notes
Econ 2100 Chapter 4 Lecture Notes
- Course
- ECON 2100
- Institution
- Kennesaw State University
This is a comprehensive and detailed note on;Chapter 4 The Market Forces of Supply and Demand for Econ 2100. *Essential!!
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Chapter 4: The Market Forces of Supply and DemandSunday, February 14, 2021 2:59 PM
• Competitive markets
○ Several sellers with similar products
○ Single buyer or seller doesn't determine price and quantity sold
Instead determined by al buyers and sellers in the market
Seller doesn't want to lower price and usually can't raise price due to similar sellers goods at competitive
prices
Each buyer's impact negligible alone
○ Perfectly competitive markets
(1) Goods offered for sale all exactly the same
(2) No single buyer or seller has any influence over the market price due to how numerous they are
= they are price takers (accept price market determines). But the quantities bought and sold are
up to them.
EX.
□ Wheat market
□ Eggs market
○ Monopoly market
(1) Only one seller
(2) Seller sets the price
EX.
□ Local table television if only one company in community to choose from
□ Tap water if only one company in community to choose from
• Demand
○ Quantity demanded
Amount of good buyers willing and able to buy
Effected by good's price
□ = Law of demand
When price of good rises, quantity demanded of the good falls
Visa versa
(while all other factors that affect how much consumers want to buy are held constant.)
○ Demand Schedule Graph
Price on y axis
Quantity (demanded) on x axis
Demand Curve downward slope
Individual demand
□ Shows individual demand by Catherine for ice cream cones at different prices
, Market demand
□ Shows sum of all individual demands in market
□
○ Shifts of demand curve
If something other than the price changes
□ For price changes, just move along D curve
Shifts if quantity demanded is altered
Shifting left and right
□
Normal Good
□ Demand for good falls when income falls
□ Visa versa
Inferior Good
□ Demand for good rises when income falls
□ Visa versa
□ EX.s
Bus rides
Cab rides
Substitutes
□ When a fall in the price of one good reduces the demand for another good, the two goods are called
substitutes.
EX. Buying cheap frozen yogurt instead of more expensive ice cream that is similar
EX.s
◊ Hotdogs and hamburgers
◊ Sweaters and sweatshirts
Complements
□ When a fall in the price of one good raises the demand for another good, the two goods are called
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