Which of the sets of ordered pairs represents a function?

A = {(–4, 5), (1, –1), (2, –2), (2, 3)}

B = {(2, 2), (3, –2), (9, 3), (9, –3)} (4 points)

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

Question

Which of the sets of ordered pairs represents a function?

A = {(–4, 5), (1, –1), (2, –2), (2, 3)}

B = {(2, 2), (3, –2), (9, 3), (9, –3)} (4 points)

 
	Only A
	Only B
	Both A and B
	Neither A nor B

jchick · Answer

A function should pass the vertical line test. That is, the same x value should not have two or more different y-values.

malcolmmcswain · Answer

Hey again!
For A:
2 is mapped twice, so it isn't a function. Remember, Any time a member of the domain is mapped twice it is never a function.
For B:
9 is also mapped twice, so it can't be a function.
Therefore, Neither A nor B are functions.

-mal :P

jchick · Answer

So the same x-value does not give two different y-values.

kpop4life123 · Answer

THANK YOU  AGAIN :)

malcolmmcswain · Answer

No problem! If you need help, all you need to do is @mention me, and I'll be there as soon as I can.

kpop4life123 · Answer

OK! ^_^