# Determining if a set of ordered pairs is a function

Taught by mrbrianmclogan
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Lesson Summary:

In this lesson, you will learn how to determine if a set of ordered pairs is a function or not. The key is to ensure that everything in set A maps to something in set B, and that each input value maps to a unique output value. If a single input value maps to multiple output values, the relationship is not a function. By following these rules, you can easily determine whether a set of ordered pairs is a function or not.

Lesson Description:

Determine if an ordered pair is a function or not

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• How do I determine whether two sets have a functional relationship or not?
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This video shows 3 examples matching elements from one set with elements of a second set. The instructor explains which relationships represent functions, and which do not.