Help please

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)}

A. Only A
B. Only B
C. Both A and B
D. Neither A nor B

Question

Help please

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)}

A. Only A
 B. Only B
 C. Both A and B
 D. Neither A nor B

helpblahblahblah · Answer

@One098

xapproachesinfinity · Answer

in order for a set to be a function
each x has to have exactly one corresponding y
if x has two different y's that means it's not a function
example (1, 2) (1, -1)

xapproachesinfinity · Answer

B does not represent a function
since (4,2) (4,-2) one x has two y attached to it! it fails the vertical line test
geometrically

helpblahblahblah · Answer

So would D be correct?

xapproachesinfinity · Answer

I gave you the definition now think about it and
a little be and see

xapproachesinfinity · Answer

bit*