Question

http://prntscr.com/9eavtd

Answer 1

@jim_thompson5910

Answer 2

@SolomonZelman

Answer 3

@TheSmartOne

Answer 4

I've solved a similar question before, now to re-write the lengthy explanation...

Answer 5

Give me a few mintues, trying to find the explanation :P

Answer 6

Ok, so a function can only have 1 x-value for a 1 y-value

Answer 7

1 x-value cannot have 2 y-values

Answer 8

Is it A then?

Answer 9

??

Answer 10

@TheSmartOne

Answer 11

@Gokuporter Correct :)

Answer 12

How? it looks more like b

Answer 13

It's B

Answer 14

Are you sure it's A?

Answer 15

My bad, it isn't A because it has 1 x-value with 2 y-values

Answer 16

so, it is indeed B. My bad. :)

Answer 17

Thanks :)

Answer 18

Anytime! :)