Match each elasticity measure with the relationship it measures.

### The pairs | Item | Matches | Why | |---|---|---| | Price elasticity of demand | Responsiveness of quantity demanded to the good's own price | It measures how strongly quantity demanded responds when that same good's price changes. | | Income elasticity of demand | Responsiveness of quantity demanded to consumer income | It measures how demand changes as consumer income changes. | | Cross-price elasticity of demand | Responsiveness of demand for one good to another good's price | It shows how the price of one good affects demand for a different good. | ### The concept Each elasticity is a percentage responsiveness measure, but the independent variable differs. Keeping track of which variable changes prevents confusing own-price, income, and cross-price measures. ### Terms - **Elasticity**: the percentage change in one variable divided by the percentage change in another. ### Remember Check which price or income appears in the denominator before naming an elasticity.