How is a Function Defined?

How is a Function Defined?

Note:

You can't go through algebra without learning about functions. This tutorial shows you the definition of a function and gives you an example of a function. Take a look!

Keywords:

  • definition
  • function
  • relation

Background Tutorials

  • Sets

      • What's a Set?What's a Set?

      What's a Set?

      This tutorial will help you understand what a set is, and the different kinds of sets that you may see when you're working on algebra problems :)

  • Ordered Pairs and The Coordinate Plane

      • What is the X-Coordinate?What is the X-Coordinate?

      What is the X-Coordinate?

      Ordered pairs are a crucial part of graphing, but you need to know how to identify the coordinates in an ordered pair if you're going to plot it on a coordinate plane. In this tutorial, you'll see how to identify the x-coordinate in an ordered pair!

  • Relations

      • What is a Relation?What is a Relation?

      What is a Relation?

      Got a set of ordered pairs? Then you have a relation! This tutorial takes a look at relations!

Further Exploration

  • Determining if Relations are 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!