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state what prices are determined by
the laws of supply and demand
define market equilibrium
quantity demanded of a product = quantity supplied of a product
define market disequilibrium
state what market disequilibrium causes
state what causes market disequilibrium
quantity demanded of a product =/= quantity supplied of a product
excess demand OR excess supply
price = below equilibrium price OR above equilibrium price
define excess demand
state what causes excess demand
quantity demanded > quantity supplied
price = too low OR quantity demanded = too high
define excess supply
state what causes excess supply
quantity supplied > quantity demanded
price = too high OR quantity demanded = too low
describe how excess demand is represented on a supply and demand curve
price on the graph = lower than equilibrium price on the graph
excess demand = area below the supply and demand curve between price and equilibrium price
describe how excess supply is represented on a supply and demand curve
price on the graph = higher than equilibrium price on the graph
excess demand = area above the supply and demand curve between price and equilibrium price
explain how market forces eliminate excess demand
firms increase prices → contraction in the quantity demanded + extension in the quantity supplied → increase in revenue
explain how market forces eliminate excess supply
firms decrease price → contraction in quantity supplied + extension in quantity demanded → increase in revenue