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40 votes
40 votes
Are any of these funtions?

Are any of these funtions?-example-1
User Michael Benin
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1 Answer

26 votes
26 votes

Answer: The first and the fourth option

Explanation:

Every input of a function can have only one output.

Option one is a function.

See the attached image as to why option two is not a function.

Option three has two outputs for the input value of "20" meaning it is not a function.

Option four is a function.

Are any of these funtions?-example-1
User Vian Esterhuizen
by
2.7k points
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