If the slope of the demand curve is -1.4,price is $5 per unit,and quantity demanded is 13 units,the price elasticity of demand is

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The price elasticity of demand is calculated as the percentage change in quantity demanded divided by the percentage change in price. In this case, the slope of the demand curve is -1.4, which means that for every 1% increase in price, quantity demanded decreases by 1.4%. The price is $5 per unit, and quantity demanded is 13 units. If the price increases by 1%, the new price will be $5.05. The new quantity demanded will be 13 - 0.014 * 13 = 12.86 units. The percentage change in quantity demanded is (12.86 - 13) / 13 * 100 = -1.05%. The percentage change in price is 1%. Therefore, the price elasticity of demand is -1.05% / 1% = -1.05.

If the Slope of the Demand Curve Is -1