demand Flashcards
what is demand?
the amount of a good or service that consumers are both willing and able to buy at each possible price in a given period of time
what is quantity demanded?
a particular quantity that the consumer is willing and able to buy at a particular price
how is quantity demanded represented on the demand curve?
reflected by a point on a demand curve
what does the law of demand state?
in a given period of time period, the quantity demanded of a product is inversely related to its price, ceteris paribus
what does the law of diminishing marginal utility state?
beyond a certain point of consumption, as more units of a good or service are consumed, the additional utility derived from each additional unit consumed will fall
what causes changes in demand?
changes in non-price determinants
what changes quantity demanded?
changes in price determinants
what are the non-price determinants?
E: expectations of price and income, ease of borrowing
G: government policies
Y: income (inferior and normal)
P: price of related goods, population size
T: tastes and preferences
S: seasonal factors
how is a change in demand shown diagrammatically?
shown by a leftward/rightward shift of the whole demand curve
how is a change in quantity demanded shown diagrammatically?
shown by movement of a point along the demand curve