Question

HELP WITH MATH HOMEWORK MEDAL= REWARD!
Determine which relation is a function.

A.
{(–3, 3), (–2, 3), (–1, 1), (0, 4), (0, 1)}

B.
{(–3, 2), (–1, 3), (–1, 2), (0, 4), (1, 1)}

C.
{(–3, 2), (–2, 3), (–1, 2), (0, 4), (1, 1)}

D.
{(–3, 2), (–2, 3), (–1, 1), (0, 4), (0, 1)}

Answer 1

If you plot all these points on graphs you should be able to see which ones are a function

Answer 2

@Elizabeth0197
I don't know how to tell if it's a function on a graph. Can you help?

Answer 3

Well, what kind of functions have you learned about ex: Linear, Exponential, quadratic

Answer 4

linear

Answer 5

@Elizbeth0197

Answer 6

Then plot all of them and see which ones are linear functions

Answer 7

Another way to do it if it's a linear function is find the slopes of all the points in the set and if they're all equal then they are a linear function!

Answer 8

A function is represented by a set of values where every x-value corresponds to EXACTLY one y-value.

Answer 9

@Elizbeth0197, a function is not always linear.

Answer 10

So is it B.?

Answer 11

hi

Answer 12

@OpenStudier I figured in this case it was because @popbottlesoda said that was what they were learning

Answer 13

No, because B has two values for x = -1.

Answer 14

Then it's D. Because it doesn't have 2 values of anything?

Answer 15

Oh wait! it's C. sorry not D

Answer 16

Yup! Nice job!