Question

Which relation is a function?

Answer 1

Can someone please explain this to me?

Answer 2

didn't we cover this one already?

check for x-repeats :)

Answer 3

How would I do that..?

Answer 4

look at the 1st graph, A)
notice 2 points there
they're located at -1,3 and -1, -1
notice the x, y pair

-1 , 3
-1, -1
x y

notice the x-value repeating
two points, using the same x-value
thus, is NOT a function

Answer 5

So that means should be crossed out too?

Answer 6

well, it means is not a function

Answer 7

another cheap way to do it, is doing the "vertical line test"
if you draw a vertical line, through any point
and the vertical line, touches other point, that is, more than one point, touched by the same vertical line, then is NOT a function

Answer 8

My best educated guess is that the answer is C.

Answer 9

Do you agree @jdoe0001

Answer 10

ahemm well
how about not guessing? :)
how about using the data? :)

Answer 11

test C for any x-repeats, if none,they it is a function

Answer 12

Which operation should be performed first according to the order of operations?

55 ÷ 11 + 16 • [12 • 3 + (54 ÷ 3) – 17]

Answer 13

I'm seriously thinking it's C

Answer 14

My relations never function... xD
Sorry. Had to.

Answer 15

5

Answer 16

Lmao, AND THE AWARD TO BEST JOKE OF 2016 GOES TO @Babynini

Answer 17

heheh @Ms-Brains thank you thank you xD #witty

Answer 18

Seriously though. Can you help mehh on thisss?

Answer 19

Okkay, that makes sense

Answer 20

wait. Oh my gosh. I am teaching you the wrong thing xD those are horizontal line test and that's for something different completely!!!!

Answer 21

O.o WOW

Answer 22

A VERTICAL line test is one where no x value can have to outputs.

Answer 23

this is a vertical line. haha aii. so B is not a function because it hits more than once, see?
So it's almost like what I was showing you earlier but that was for testing something else