Show How is equilibrium price determined?
Updated 7/8/2018 Jacob Reed What is equilibrium? 
How does the market move toward equilibrium? If the market price is above equilibrium, quantity supplied will be greater than quantity demanded; creating a surplus. When that occurs, market forces push the price downward toward equilibrium (increasing Qd and decreasing Qs) until the surplus is eliminated. If the market price is below equilibrium, quantity supplied will be less than quantity demanded; creating a shortage. When that occurs, market forces pull the price upward toward equilibrium (decreasing Qd and increasing Qs) until the shortage is eliminated.
How do shifts in supply and demand change equilibrium? Shifts in supply or demand curves move the equilibrium price and quantity. If demand increases, equilibrium price and quantity both increase. If demand decreases, equilibrium price and quantity both decrease. If supply increases, equilibrium price decreases, and quantity increases. If supply decreases, equilibrium price increases and equilibrium quantity decreases. How do double shifts impact price and quantity? When supply and demand both shift, either price or quantity will be indeterminate. When supply and demand move in the same direction, price is indeterminate. That is because an increase in supply decrease price while an increase in demand will increase price. Since the price axis moves in both directions, the net effect is based on which shift is stronger. Since that cannot be known, the price will be indeterminate. Since both shifts increase equilibrium quantity, the quantity will definitely increase. Similarly, when supply and demand move in opposite directions, quantity is indeterminate because one shift will increase quantity and the other will decrease quantity. The key to figuring out the impact of double shifts is to graph out both shifts and see what happens to the equilibrium price and quantity with each shift. If the shifts conflict, that axis is indeterminate.
What happens to price and quantity when supply or demand shifts?A decrease in demand will cause the equilibrium price to fall; quantity supplied will decrease. An increase in supply, all other things unchanged, will cause the equilibrium price to fall; quantity demanded will increase. A decrease in supply will cause the equilibrium price to rise; quantity demanded will decrease.
What happens to equilibrium price and quantity when supply shifts right and demand shifts right?Effectively, both equilibrium price and quantity tend to increase. When the increase is demand is less than the increase in supply, the right shift of the demand curve is less than the right shift of supply curve. In this case, the equilibrium price falls whereas the equilibrium quantity rises.
What happens to equilibrium price and quantity when supply shifts left and demand shifts left?A decrease in demand is illustrated by a leftward shift of the demand curve, which, all other things remaining constant or equal, causes the equilibrium price to fall.
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What happens to the equilibrium price and equilibrium quantity when supply or demand shifts?
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