demand curves
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Demand is "the quantity of a commodity that will be required at any given price over some given period of time". "For the majority of the goods and services, experience shows that the quantity demanded will increase as the price falls." (Stanlake 155) This characteristic can be shown by a demand curve. A demand curve is a graphical representation of the data in table with values of demand called a demand schedule. A good that is in greater demand do to income increases is known as a normal good. A inferior good is a good that is in less demand even though the income increases. When this situation occurs the demand curve is positive sloping. A giffen good is a special type of inferior good where demand increases when price increases. The graph below is a sample demand curve, where the demand schedule for the quantity of toilet paper demanded is graphed.
From this graph we can determine how many rolls of toilet paper will be purchased at what price...