SOLUTION: determine whether each relation is a function 1.)(4,5) (2,-3) (-2,5) (4,7)

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Question 125286: determine whether each relation is a function
1.)(4,5) (2,-3) (-2,5) (4,7)
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
No, it's not a function.
It violates the requirement that an input value provides a unique output value because f(4)=5 and f(4)=7.