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.
Did you know that a relation has a domain? The domain of a relation is the set of the first coordinates from the ordered pairs. This tutorial defines the domain of a relation!
Did you know there's something called the inverse of a relation? Watch this tutorial to learn the definition for the inverse of a relation and to see an example!
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!
Think about sliding a penny on a table. All you're doing is moving the penny to a new location on the table. That's basically all that's happening when you translate a function! When you translate a function, you're just sliding it to a new location on the coordinate plane!
Adding functions is easier than you might think! Follow along with this tutorial to learn how to add two functions together.
The steps for finding the inverse of a linear function are a lot like those for solving a linear equation. In both cases you need to isolate a variable in an equation. Watch this tutorial to learn more about finding inverses of linear functions!
A composition of two functions uses the output of one function as the input of the other. Watch this tutorial to learn more about function composition!