< Intermediate Algebra

Linear equations have two variables: and .

Examples

If one were doing a walkathon and wanted to raise $5 for every mile walked, an equation for the total money raised, as a function of the number of miles walked, would be . Would donors, however, promise to not only pay $5 per mile but give an additional $30 just for taking part, the equation would be . Note that this example is limited as negative miles don't make sense, but the line defined by the equation is infinite in either direction.

This article is issued from Wikibooks. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.