change in the price of baseball bats can also have a range of effects, either positive or negative, on his

purchases of cameras. Since Sergei purchases all his products out of the same budget, a change in the price of

one good can also have a range of effects, either positive or negative, on the quantity consumed of other goods.

In short, a higher price typically causes reduced consumption of the good in question, but it can affect the

consumption of other goods as well.

LINK IT UP

Read this article (http://openstax.org/l/vending) about the potential of variable prices in vending machines.

The Foundations of Demand Curves

Changes in the price of a good lead the budget constraint to rotate. A rotation in the budget constraint means

that when individuals are seeking their highest utility, the quantity that is demanded of that good will change.

In this way, the logical foundations of demand curves—which show a connection between prices and quantity
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