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Subject: Economics Class: X Time Aloccation: 2 x 45 Minute.

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Presentasi berjudul: "Subject: Economics Class: X Time Aloccation: 2 x 45 Minute."— Transcript presentasi:

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2 Subject: Economics Class: X Time Aloccation: 2 x 45 Minute

3 Today's Lesson

4 Kompetensi Dasar 3.2. Menjelaskan hukum permintaan dan hukum penawaran serta asumsi yang mendasarinya. STANDAR KOMPETENSI: 3. Memahami konsep ekonomi dalam kaitannya dengan permintaan, penawaran, harga keseimbangan, dan pasar Standar Kompetensi dan Kompetensi Dasar

5 1. Menginterpretasikan hukum permintaan dan penawaran. 2. Menginterpretasikan asumsi yang mendasari hukum permintaan dan penawaran. 3. Menggambar kurva permintaan dan penawaran yang bergerak dan bergeser. 4. Membuat fungsi permintaan dan fungsi penawaran berdasarkan hukum permintaan dan penawaran. 1. Menginterpretasikan hukum permintaan dan penawaran. 2. Menginterpretasikan asumsi yang mendasari hukum permintaan dan penawaran. 3. Menggambar kurva permintaan dan penawaran yang bergerak dan bergeser. 4. Membuat fungsi permintaan dan fungsi penawaran berdasarkan hukum permintaan dan penawaran.

6 The Law of Demand The law of demand says: “If price increases, the demand for goods or services will decrease. On the contrary, when price decreases, the demand for goods or services will increase, ceteris paribus”.

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8 Price   Quantity Demand  Price   Quantity Demand  “relationship between price and demand is inversely” P ↑  Qd ↓ or P ↓  Qd ↑

9 Example: Kartini’s Demand Schedule Copyright © 2004 South-Western Price of Ice-Cream Cone (Rp) Quantity of Cones Demanded

10 Demand Curve Copyright © 2004 South-Western Price of Ice-Cream Cone Quantity of Ice-Cream Cones Rp A decrease in price increases quantity of cones demanded. Price of Ice- Cream Cone (Rp) Quantity of Cones Demanded

11 The Law of Supply The law of supply says: “If the price of goods or services increases, the quantity of goods or services supplied also increase, and on the contrary, if the price of goods or services decreases, the quantity of goods or services supplied also decreases, ceteris paribus”.

12 Price   Quantity Supply  Price   Quantity Supply  P ↑  Qs ↑ or P ↓  Qs ↓ “relationship between price and supply is directly proportional”

13 Example: Krisna’s Supply Schedule Copyright © 2004 South-Western Price of Ice-Cream Cone (Rp) Quantity of Cones Supplied

14 Supply Curve Copyright©2003 Southwestern/Thomson Learning Price of Ice-Cream Cone Quantity of Ice-Cream Cones Rp An increase in price increases quantity of cones supplied. Price of Ice- Cream Cone (Rp) Quantity of Cones Supplied

15 Assumption of the law of demand and supply Assumptions underlying the law of demand and supply of other factors being equal that changes only the price of the goods themselves. This condition is known as “Ceteris paribus”

16 Factors - Factors That Affect Demand LLevel of Income PPopulation PPeople’s Taste PPeople’s Prediction PPrice of Subtitutive and Complementary Goods

17 Factors - Factors That Affect Supply PProduction Cost NNumber of Producers NNatural Disasters TTechnology PPrice of Other Goods and Services

18 Demand Curve Shifts Price of Ice-Cream Cone Quantity of Ice-Cream Cones Increase in demand Decrease in demand Demand curve,D 3 Demand curve,D 1 Demand curve,D 2 0

19 Example: If Income Increase $ Price of Ice- Cream Cone Quantity of Ice-Cream Cones 0 Increase in demand An increase in income... D1D1 D2D2

20 Example: If Income Decrease $ Price of Ice- Cream Cone Quantity of Ice-Cream Cones 0 Decrease in demand An increase in income... D1D1 D2D2

21 Supply Curve Shifts Copyright©2003 Southwestern/Thomson Learning Price of Ice-Cream Cone Quantity of Ice-Cream Cones 0 Increase in supply Decrease in supply Supply curve,S 3 curve, Supply S 1 curve,S 2

22 Determine The Demand And Supply Functions P – P1 P2 – P1 = Q – Q1 Q2 – Q1 Initial Price Prices After The Change Initial Quantity Product Quantity After The Change Formula:

23 Demand and Supply Functions Demand Function: P D = a - bQ P D = – 0,02 Q Supply Function: P D = a + bQ P s = ,02 Q

24 Demand Function P = a - bQ Price constants Quantity Coefficient The Law of Demand The Law of Demand

25 Supply Function P = a + bQ Price constants Quantity Coefficient The Law of Supply The Law of Supply

26 Example PriceQuantity how its function

27 P – – = Q – – P – = Q – P – = –1.000 Q P = –1.000 Q P D =8.000 – 0,02 Q

28 Sekian Semoga Bermanfaat Terima kasih


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