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Determine which set of ordered pairs is a function.


a.{(-1,3),(1,4),(-1,5)}

B{(5,3),(-6,3),(-2,4)}
C{(0.5, 1.6),(1, 1.75),(1.5, 2.3), (0.5, 3.6)}
D{(1,2), (-5,4),(3,6),(-5,2)}

Verified Answer :

bcalle

In a function the x value will not repeat. The answer is B.

HomertheGenius

A set of ordered pairs is not a function if the same x value has a different y value with it.
In a set A ) we have: ( - 1, 3 ) and ( - 1 , 5 ). In C ) we have ( 0.5, 1.6 ) and ( 0.5, 3.6 ). In D ) there are ( - 5 , 4 ) and ( - 5 , 2 ).
Answer:
B ) { ( 5 , 3 ), ( - 6, 3 ), ( - 2 , 4 ) }

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