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Which ones are functions and which ones are NOT functions?

Which ones are functions and which ones are NOT functions?
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4 votes
Which ones are functions and which ones are NOT functions?

Which ones are functions and which ones are NOT functions?-example-1
User Goten
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2 Answers

1 vote
A is a function. B, C, and D are not functions.
User Kounavi
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6 votes

Answer:

only a is a function because its the only one that doesn't have a repeating x value

User UrKll
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