Other Properties of Demand Curves•Demand curves intersect the quantity (X)-axis, as a result of time limitations and diminishing marginal utility.•Demand curves intersect the (Y)-axis, as a result of limited incomes and wealth.
Demand Curve Shifters: # of buyers•An increase in the number of buyers causesan increase in quantity demanded at each price, which shifts the demand curve to the right.
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$0.00$1.00$2.00$3.00$4.00$5.00$6.00051015202530PQSuppose the number of buyers increases. Then, at each price, quantity demanded will increase (by 5 in this example).Demand Curve Shifters: # of buyers
Income and Wealth•Incomeis the sum of all households wages, salaries, profits, interest payments, rents, and other forms of earnings in a given period of time. It is a flowmeasure.•Wealth, or net worth, is the total value of what a household owns minus what it owes.It is a stockmeasure.