# Economic Definition of elasticity determinants. Defined.

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**Term elasticity determinants Definition**: Three factors that affect the numerical value of price elasticity of demand and price elasticity of supply calculations, including availability of substitutes, time period of analysis, and proportion of budget. A given good can have a different price elasticity (both demand and supply) if these three determinants change. The first two determinants are important to both price elasticity of demand and price elasticity of supply, while the third relates specifically to the price elasticity of demand. Three elasticity determinants are: availability of substitutes, time period, and proportion of budget.

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