Changes

Complementary goods are commodities that depend on each other such that in increase in the price of one good causes a decrease in the demand for the related good.  For example, an increase in the price of french toast could cause a decrease in the demand for maple syrup, because those two goods are often consumed together.  An increase in the price of salad dressing could cause a decrease in demand for salad.

'''Complementary goods''' are commodities that depend on each other such that an increase in the [[price]] of one good causes a decrease in the [[demand]] for the related good.  For example, an increase in the price of [[French toast]] could cause a decrease in the demand for [[maple syrup]], because those two goods are often consumed together.  An increase in the price of [[salad dressing]] could cause a decrease in demand for [[salad]]. Thus, complementary goods will always have a negative cross elasticity of demand (% change in demand for good A divided by % change in price of good B)

Complementary goods are the opposite of [[substitute goods]].

Complementary goods are the opposite of [[substitute goods]].