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Precalculus : Determine if a Relation is a Function

A relation is the mapping between a set of input values called the domain and a set of output values called the range. The input values or the domain consists of the x values

Is it a Function? (How to Tell)

Possible Answers: Correct answer: Explanation: The definition of a function requires that for each input (i.e. each value of ), there is only one output (i.e. one value of ). For , each value of

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Ways to Tell if Something Is a Function

HOW TO DETERMINE IF THE ORDERED PAIR IS A FUNCTION If each input associates with one output, then it is a function. In the given set of ordered pairs, by drawing the arrow diagram, we
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