In this lesson on one-to-one functions, the definition, determining whether functions are one-to-one, visual representations, and how to use the horizontal line test are covered. The definition of a one-to-one function is that every input corresponds to only one output, and every output corresponds to only one input. Examples of one-to-one functions are provided, including an ordered pair representation of a polygamous society. The lesson concludes by discussing that the next video will cover inverse functions, which requires knowledge of one-to-one functions.
Learn about One-to-one Functions.
More free YouTube videos by Julie Harland are organized at http://yourmathgal.com