Which of the sets of ordered pairs represents a function?

A = {(2, −2), (5, −5), (−2, 2), (−5, 5)}
B = {(4, 2), (4, −2), (9, 3), (9, −3)}

Question

Which of the sets of ordered pairs represents a function?

A = {(2, −2), (5, −5), (−2, 2), (−5, 5)}
B = {(4, 2), (4, −2), (9, 3), (9, −3)}

bayleejadee · Answer

Only A
 Only B
 Both A and B
 Neither A nor B

bayleejadee · Answer

@Lexaye

zepdrix · Answer

Repeated x-coordinates is baaaadd! No function!

Example:
These two ordered pairs would NOT make a function: (7,9) and (7,10)

bayleejadee · Answer

So, even if they're the same number but negative, does that count? like in the first set of ordered pairs?

zepdrix · Answer

Negative means it's a completely different number :)

This set of ordered pairs can make a function, yes: (3,4) and (-3,5)

bayleejadee · Answer

So it would be only A, correct? (:

zepdrix · Answer

Yayyy good job \c:/

bayleejadee · Answer

Thank you for your help!

zepdrix · Answer

np