After completing this section, you should be able to do the following.

  • State the definition of a function.
  • Interpret function notation.
  • Evaluate a function at a particular value using a graph or formula for the function.
  • Solve equations of the form using a graph or formula for .
  • Identify the domain and range of a function using a graph or formula for the function.
  • Distinguish between functions by considering their domains.
  • Use the vertical line test to distinguish graphs of functions from graphs of non-functions.