Question

Is the following relation a function ?

Answer 1

@phi

Answer 2

yes

Answer 3

I hope it helps @IndianBoyNiko

Answer 4

?

Answer 5

it is a function

Answer 6

I think no, if in the horizontal axis there is x-variable, and on the vertical axes there is the y-variable, when the function is y=f(x). That's because for one fixed x, there are two y values, and it contradicts the definition of a function as y=f(x)

Answer 7

So what's the answer ? :/

Answer 8

I think, the answer is "no".