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Demand
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amount of a good consumers are able/willing to purchase
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general demad function
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how Qd related the the product price
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direct demand function
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relationship between Qd and price
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inverse demand function
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max price consumers are willing to pay
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normal good
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increase in income causes an increase in demand for a good
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Inferior good
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increase in price causes a decrease in demand
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substitute
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price increases --> demand increases
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complement
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demand increases --> price decreases
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law of demand
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Qd increases --> price falls and vice versa
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Change in Qd
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caused by change in price (movement along)
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increase/decrease demand
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causes a Shift --> increase in income changes all the price points
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change in demand
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if one or more variable changes in function
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Qs
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amount of good offered at a time
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general supply function
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all 6 variables effect Qs
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substitute in supply
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increase in price and supply of one good and decrease supply in other
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complement in supply
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increase in price of one good causes an increase in supply of both goods
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supply price
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min price needed to produce good
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equilibrium
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P=Q; consumers can buy all at that price and consumers can sell all that that price
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equilibrium quantity
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amount of good available at that price
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economic value
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max price consumers willing to pay for a unit
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price ceiling
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max price gov't allows producers to charge for goods (below equilibrium - shortage)
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price floor
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min price allowed to charge for good (above equilibrium - surplus)