Which of the following "other things" are not held constant along a demand curve?

Question

Quizplus · Accepted Answer

The price of the good itself changes as we move along the demand curve, so it is not held constant. A change in price causes a movement along the demand curve, known as the quantity demanded. The other factors listed (preferences, prices of related goods, income, expected future income and credit) are held constant along a demand curve, assuming the curve represents the relationship between only one good and its price.

Which of the Following "Other Things" Are Not Held Constant