Question

Which relation is a function?

A.
x −2 0 0 2 4
y 4 3 4 4 6


B.
x 3 5 7 10 14
y 9 6 9 2 3


C.
x −3 2 2 4 6
y 2 1 8 5 3


D.
x −6 −1 1 1 6
y 0 6 2 −3 4

Answer 1

@dtan5457

Answer 2

Only B

Answer 3

if x is used more than once it's not a function

Answer 4

Because an X can only have 1 Y value

Answer 5

But a Y can have multiple X values. That's what a function is

Answer 6

So a distinct X will always give you a distinct Y

Answer 7

o i get it

Answer 8

So B

Answer 9

:)