What Are Functions?

Setup the idea of functions for the class. Using sets, the presentation introduces the concept of a function. The initial example uses a general function but then moves on to equations as functions. The video provides an example of an algebraic equation that is not a function and introduces the vertical line test.

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CCSS: Adaptable
Instructional Ideas

  • Lead a discussion on whether all function graphs must be connected
  • Show the class other ways to represent a function such as mappings
Classroom Considerations

  • Individuals should know how to evaluate an expression

  • Promotes practice to develop a better understanding
  • Provides examples of graphs and names of common functions

  • None