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January 16, 2026 

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DETERMINANTS: Ceteris paribus factors that are held constant when a curve is constructed. Changes in these factors then cause the curve to shift to a new location. The most common determinants are demand determinants for the demand curve (income, preferences, other prices, buyers' expectations, and number of buyers) and supply determinants for the supply curve (resource prices, technology, other prices, buyers' expectations, and number of buyers). Other common curves and their determinants include: production possibilities curve (technology, education and the quantities of labor, capital, land, and entrepreneurship); aggregate demand curve (the four aggregate expenditures of consumption, investment, government purchases, and net exports); and short-run average cost curve (technology, wages, and other production cost).

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INELASTIC DEMAND:

The general elasticity relation in which relatively large changes in price cause relatively small changes in quantity demanded. Large changes in price cause relatively small changes in quantity demanded or the percentage change in quantity demanded is smaller than the percentage change in price. This characterization of elasticity is most important for the price elasticity of demand. Inelastic demand is one of two general elasticity relations for demand. The other is elastic demand.
An inelastic demand relation is NOT a very responsive, or stretchable, relation. The inelastic demand relation is most often directed toward demand in terms of the price elasticity of demand. In this context, demand is said to be inelastic if the percentage change in quantity is smaller than the percentage change in price. This means that buyers are not responsive to price changes.

An inelastic demand relation can fall into one of two categories--perfectly inelastic and relatively inelastic.

  • Perfectly Inelastic: Perfectly inelastic means that quantity demanded is unaffected by any change in price. In other words, the quantity is essentially fixed. It does not matter how much price changes, quantity does not budge. Perfectly inelastic demand occurs when buyers have no choice in the consumption of a good.

  • Relatively Inelastic: Relatively inelastic means that relatively large changes in price cause relatively small changes in quantity. In other words, quantity is not very responsive to price, but it does change. More specifically, the percentage change in quantity demanded is less than the percentage change in price. Relatively inelastic demand occurs when buyers are only able to choose among a small number of imperfect substitutes-in-consumption.

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Recommended Citation:

INELASTIC DEMAND, AmosWEB Encyclonomic WEB*pedia, http://www.AmosWEB.com, AmosWEB LLC, 2000-2026. [Accessed: January 16, 2026].


Check Out These Related Terms...

     | inelastic supply | inelastic | elastic | elastic supply | elastic demand | perfectly elastic | perfectly inelastic | relatively elastic | relatively inelastic | unit elastic | elasticity alternatives | elasticity alternatives, demand | elasticity alternatives, supply |


Or For A Little Background...

     | elasticity | coefficient of elasticity | price elasticity of demand | demand | law of demand | demand curve |


And For Further Study...

     | elasticity and demand slope | elasticity and supply intercept | demand elasticity and total expenditure | price elasticity of supply | income elasticity of demand | cross elasticity of demand | elasticity determinants |


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