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Are they functions? if not why?

Are they functions? if not why?-example-1
User Moonshine
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7 votes

Answer:

1 is yes, 2 is no because 1 and 3 repeat, which means that 2 Y-Values would get the x-value of 1 and 3, and x cannot have 2 different values.

Explanation:

User Koekenbakker
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