Answer: Substitutes: positiveComplements: negative
How does the cross-price elasticity of demand differ between different goods?

In economics the cross elasticity of demand or cross-price elasticity of demand measures the responsiveness of the quantity demanded for a good to a change in the price of another good ceteris paribus. It is measured as the percentage change in quantity demanded for the first good that occurs in response to a percentage change in price of the second good. For example if in response to a 10% increase in the price of fuel the demand for new cars that are fuel inefficient decreased by 20% the cross elasticity of demand would be: ${\displaystyle {\frac {-20\%}{10\%}}=-2}$ . A…

In economics the cross elasticity of demand or cross-price elasticity of demand measures the responsiveness of the quantity demanded for a good to a change in the price of another good ceteris paribus. It is measured as the percentage change in quantity demanded for the first good that occurs in response to a percentage change in price of the second good. For example if in response to a 10% increase in the price of fuel the demand for new cars that are fuel inefficient decreased by 20% the cross elasticity of demand would be: ${\displaystyle {\frac {-20\%}{10\%}}=-2}$. An increase in the price of fuel will decrease demand for cars that are not fuel efficient. A negative cross elasticity denotes two products that are complements while a positive cross elasticity denotes two substitute products. For example if products A and B are complements an increase in the price of B leads to a decrease in the quantity demanded for A. Equivalently if the price of product B decreases the demand curve for product A shifts to the right reflecting an increase in A's demand resulting in a negative value for the cross elasticity of demand. The exact opposite reasoning holds for substitutes.

The fact that one good is substitutable for another has immediate economic consequences: insofar as one good can be substituted for another the demands for the two goods will be interrelated by the fact that customers can trade off one good for the other if it becomes advantageous to do so. An increase in the price of a good will (ceteris paribus) increase demand for its substitutes while a decrease in the price of a good will decrease demand for its substitutes see Figure 2. The relationship between demand schedules determines whether goods are …

The fact that one good is substitutable for another has immediate economic consequences: insofar as one good can be substituted for another the demands for the two goods will be interrelated by the fact that customers can trade off one good for the other if it becomes advantageous to do so. An increase in the price of a good will (ceteris paribus) increase demand for its substitutes while a decrease in the price of a good will decrease demand for its substitutes see Figure 2. The relationship between demand schedules determines whether goods are classified as substitutes or complements. The cross-price elasticity of demand shows the relationship between two goods it captures the responsiveness of the quantity demanded of one good to a change in price of another good. Cross-Price Elasticity of Demand (Ex y) is calculated with the following formula: Ex y = Percentage Change in Quantity Demanded for Good X / Percentage Change in Price of Good Y The cross-price elasticity may be positive or negative dependin...

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