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DEMAND, SUPPLY, and MARKET EQUILIBRIUM Appendix ( chapter 3 ). A market demand curve shows the relationship between the quantity demanded and price, ceteris paribus. Equilibrium in a market is shown by the intersection of the demand curve and the supply curve.
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A market demand curve shows therelationship between the quantitydemanded and price, ceteris paribus. Equilibrium in a market is shown by the intersection ofthe demand curve and the supply curve. When a marketreaches equilibrium, there is no pressure to change theprice. A market supply curve shows therelationship between the quantitysupplied and price, ceterisparibus.
A change in demand changes price and quantity in the samedirection: An increase in demand increases the equilibriumprice and quantity; a decrease in demand decreases theequilibrium price and quantity. A change in supply changes price and quantity in oppositedirections: An increase in supply decreases price andincreases quantity; a decrease in supply increases price anddecreases quantity.