Question #54d95

1 Answer
Spazzinq
Dec 12, 2017

#{(-1,6),(1,3),(2,5)(1,7)}#

(The third one)

Explanation:

If any of the #x#-values are the same and have 2+ different #y#s, that means that it is not a function because a function can only have one #y# for every #x# (one output for every input).

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