Real math help.
How Can You Tell if a Relation is Not a Function?
Note:
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.
Background Tutorials
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Representing a Function
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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!
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Attributes of Functions
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What is Domain?
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!
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Further Exploration
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Recognizing a Function
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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!
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