6 DEMAND DEFINED What is Demand? What is the Law of Demand? Demand is the different quantities of goods that consumers are willing and able to buy at different prices.(Ex: Bill Gates is able to purchase a Ferrari, but if he isn’t willing he has NO demand for one)What is the Law of Demand?There is an INVERSE relationship between price and quantity demanded
7 LAW OF DEMAND As Price Falls… …Quantity Demanded Rises As Price Rises… …Quantity Demanded FallsQuantity DemandedPrice
8 Example of DemandI am willing to sell several A’s in AP Economics. How much will you pay?PriceQuantityDemandedDemand Schedule
9 Why does the Law of Demand occur? The law of demand is the result of three separate behavior patterns that overlap:The Substitution effectThe Income effectThe Law of Diminishing Marginal UtilityWe will define and explain each…
10 Why does the Law of Demand occur? 1. The Substitution EffectIf the price goes up for a product, consumer buy less of that product and more of another substitute product (and vice versa)2. The Income EffectIf the price goes down for a product, the purchasing power increases for consumers -allowing them to purchase more.
11 Why does the Law of Demand occur? 3. Law of Diminishing Marginal UtilityU-TIL-IT-YUtility = SatisfactionWe buy goods because we get utility from themThe law of diminishing marginal utility states that as you consume more units of any good, the additional satisfaction from each additional unit will eventually start to decreaseIn other words, the more you buy of ANY GOOD the less satisfaction you get from each new unit.Discussion Questions:What does this have to do with the Law of Demand?How does this effect the pricing of businesses?
12 Can you see the Law of Diminishing Marginal Utility in Disneyland’s pricing strategy? ChangeN/A$54$33$15$10$5
15 Let’s draw a new demand curve for cereal… The Demand CurveA demand curve is a graphical representation of a demand schedule.The demand curve is downward sloping showing the inverse relationship between price (on the y-axis) and quantity demanded (on the x-axis)When reading a demand curve, assume all outside factors, such as income, are held constant. (This is called ceteris paribus)Let’s draw a new demand curve for cereal…
16 GRAPHING DEMAND Draw this large in your notes Demand Schedule Price of CerealDraw this large in your notes$54321PriceQuantityDemanded$510$420$330$250$180oQQuantity of Cereal
17 GRAPHING DEMAND Demand Schedule Price of Cereal $5 10 $4 20 $3 30 $2 QuantityDemanded$510$420$330$250$180DemandoQQuantity of Cereal17
18 Where do you get the Market Demand? BillyJeanOther IndividualsMarketPriceQ Demd$51$42$33$25$17PriceQ Demd$5$41$32$23$15PriceQ Demd$59$417$325$242$168PriceQ Demd$510$420$330$250$180PPPP$3$3$3$3DDDDQQQQ322530