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Which relation represents a function ?

Which relation represents a function ?-example-1
User Ultradoxx
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1 Answer

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5 votes

Answer:

The third choice

Explanation:

a relation is a function if an input has at most one output for a given input

Choices 1, 2 and 4 are not functions as they have two different outputs for the same input. (See the red ovals)

Which relation represents a function ?-example-1
User Lorccan
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