Question

Is this graph a function? Picture included. Thanks ^^

Answer 1

I'm asking about the one I left unchecked. I got confused because of the open circle.

Answer 2

when x = 0 on that one, y is -1

if there was a closed circle at (0,1) as well, then it wouldn't be a function because you wouldn't know what output you would get if the input was x = 0

Answer 3

but that's not the case, so this is a function

Answer 4

Thanks.

Answer 5

np