| A | B |
|---|
| consumers buy more of a good when the price decreases and less of it when the price increases | law of demand |
| desire to own something and pay for it | demand |
| change in consumption resulting from a change in income | income effect |
| a good that people demand more of when their income goes up | normal good |
| goods used in place of each other | substitutes |
| a cost that does not change | fixed cost |
| government intervention in a market | regulation |
| amount of goods available | supply |
| government payment that supports a business | subsidy |
| a cost that rises or falls | variable cost |
