Question

State which of the following sets of ordered pairs represent a function.

Set A: (5, 2), (4, 3), (3, 4), (2, 5)
Set B: (-1, -6), (0, 2), (1, 2), (3, 6)
Set C: (2, 1), (4, 2), (2, 3), (8, 4)
a.

Set C
b.

Set B
c.

Set A
d.

Set A and Set B

Answer 1

Remember that for a set of ordered pairs to be a function, there MUST BE NO two pairs with the same left-coordinate and different right-coordinates...

Answer 2

SEt A

Answer 3

Set C is definitely not a function, because there is more than one y value for the x value of 2.

Answer 4

Surely set B is a function too.

Answer 5

Oh so Answer D!

Answer 6

Yep, that's correct. :)