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AP Economics

AP Economics. Mr. Bernstein Module 6 : Supply and Demand – Supply and Equilibrium October 7, 2014. AP Economics Mr. Bernstein. Competitive Markets An institution which brings together buyers and sellers of particular goods or services Local, national or international

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AP Economics

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  1. AP Economics Mr. Bernstein Module 6: Supply and Demand – Supply and Equilibrium October 7, 2014

  2. AP EconomicsMr. Bernstein Competitive Markets • An institution which brings together buyers and sellers of particular goods or services • Local, national or international • Face-to-face, electronic or other impersonal • Assumption: no buyer or seller so large they affect pricing • Will look at markets which are not perfectly competitive later in the course

  3. AP EconomicsMr. Bernstein Supply Schedule and Supply Curve

  4. AP EconomicsMr. Bernstein Law of Supply • All other things equal, as price increases the quantity supplied rises • So there is an direct relationship between price and quantity supplied • Plotted on a graph, the law of demand infers an upward sloping supply curve • Note: It will be important to distinguish between a change in the “quantity supplied” and a change in “supply”

  5. AP EconomicsMr. Bernstein Supply Shifters • Factors which change supply other than price • An increase in supply shifts the supply curve to the right • A decrease in supply shifts the supply curve to the left • Notice an increase in supply shifts the supply curve horizontally, not vertically

  6. AP EconomicsMr. Bernstein A Shift in Supply is different from movement along the Supply Curve!!

  7. AP EconomicsMr. Bernstein A Shift in Supply is different from movement along the S Supply Curve!!

  8. AP EconomicsMr. Bernstein Supply Shifters • Input or Resource prices • Increase in the price of inputs causes a decrease in the quantity supplied • Prices of related goods • Increase in the price of Substitute Goods’ price causes a decrease in the quantity supplied (production shifts to higher price substitute product) • Technology • Advances in technology increases the quantity supplied

  9. AP EconomicsMr. Bernstein Supply Shifters, cont. • Expectations • Expectations of future price increases decreases the quantity supplied today • Number of producers • More producers increase the quantity supplied

  10. AP EconomicsMr. Bernstein Supply Shifters: T - RICE • Technology • Related prices (substitutes, compliments) • Input prices • Competition (number of producers) • Expectations

  11. AP EconomicsMr. Bernstein Equilibrium • Equilibrium is the point where no buyers or sellers would be better off changing price or quantity • AKA “Market-clearing” price • Market prices are like a pendulum, swinging back and forth. At equilibrium, they are stable

  12. AP EconomicsMr. Bernstein Equilibrium: Where Supply and Demand Curves Intersect

  13. AP EconomicsMr. Bernstein Equilibrium Prices Fall When There is a Surplus

  14. AP EconomicsMr. Bernstein Equilibrium Prices Rise When There is a Shortage

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