How Do You Use the Vertical Line Test to Figure Out if a Graph is a Function?

How Do You Use the Vertical Line Test to Figure Out if a Graph is a Function?

Note:

Trying to figure out if an equation is a function? Graph it and perform the vertical line test. If it passes, then it's a function! Get some practice by watching this tutorial!

Keywords:

  • problem
  • graph
  • plot
  • identify function
  • apply vertical line test
  • vertical line test
  • function

Background Tutorials

  • Representing Linear Relationships

      • How Do You Graph a Linear Equation by Making a Table?How Do You Graph a Linear Equation by Making a Table?

      How Do You Graph a Linear Equation by Making a Table?

      Graphing a function? It would be really helpful if you had a table of values that fit your equation. You could plot those values on a coordinate plane and connect the point to make your graph. See it all in this tutorial!

  • Representing a Function

      • What's a Function?What's a Function?

      What's a Function?

      You can't go through algebra without learning about functions. This tutorial shows you a great approach to thinking about functions! Learn the definition of a function and see the different ways functions can be represented. Take a look!

  • Formalizing Relations and Functions

      • What's the Vertical Line Test?What's the Vertical Line Test?

      What's the Vertical Line Test?

      Even graphs need to worry about tests! Using the vertical line test, you can figure out if a graph is a function or not. Watch this tutorial and learn about the vertical line test. Then, put your graphs to the test!