Functions



Popular Tutorials in Functions

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

    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?How is a Function Defined?

    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!

    • What Are Dependent and Independent Variables?What Are Dependent and Independent Variables?
    • How Do You Solve a Word Problem Using a Function?How Do You Solve a Word Problem Using a Function?

    How Do You Solve a Word Problem Using a Function?

    Word problems are a great way to see math in action! This word problem deals with calculating profit after a certain number of years. See how to use a function from the word problem to solve!

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

    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?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?

    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!

    • How Do You Find f(x) If You Have a Value For x?How Do You Find f(x) If You Have a Value For x?

    How Do You Find f(x) If You Have a Value For x?

    To solve a function for a given value, plug that value into the function and simplify. See this first-hand by watching this tutorial!

    • 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!

    • 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!

    • What is Function Notation?What is Function Notation?

    What is Function Notation?

    Every see 'f(x)' in your math? That's function notation! It's a way to indicate that an equation is a function. Learn about function notation by watching this tutorial.