If There Is a -20 Per Cent Change in Y

question 7

Multiple Choice

If there is a -20 per cent change in y given a 5 per cent change in x, what is the elasticity of y given the change in x?

• A)2
• B)-.025
• C)-1/2
• D)-4
• E)3

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Definitions:

Unitary Demand

A market condition in which the demand for a product is directly proportional to changes in its price, leading to a constant revenue.

Demand Curve

A graphical representation showing the relationship between the price of a good or service and the quantity demanded for a given period.

Economies of Scale

Cost advantages that enterprises obtain due to their scale of operation, with cost per unit of output generally decreasing with increasing scale as fixed costs are spread out over more units of output.

Price Elasticity of Demand

A measure of how much the quantity demanded of a good responds to a change in the price of that good.