Functions

Popular Tutorials in Functions

• • 

  How Can You Tell if a Relation is Not a Function?

  Every function is a relation, but not every relation is a function! Watch this video to learn how to tell which relations are functions and which are not.

• • 

  How is a Function Defined?

  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!

• • 

  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!

• • 

  How Do You Figure Out If a Relation is a Function?

  How do you figure out if a relation is a function? You could set up the relation as a table of ordered pairs. Then, test to see if each element in the domain is matched with exactly one element in the range. If so, you have a function! Watch this tutorial to see how you can determine if a relation is a function.

• • 

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

  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!

• • 

  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!

• • 

  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!

• • 

  What is a One-to-One Function?

  What is a one-to-one function? What qualities make a function one-to-one? This tutorial is a great introduction and explanation for one-to-one functions!

• • 

  What is a Continuous Function?

  You've probably seen a continuous function before and not even known it! In this tutorial, you'll learn what a continuous function is and what a graph needs to have in order to be continuous.