Question

http://prntscr.com/38ou1w

Answer 1

If you flip this function across y=x line, then it's wouldn't be function anymore because it will contain two outputs from single input.

Answer 2

Function can only have one relationship for each input.

Answer 3

Is this clear?

Answer 4

correct for a function to have inverse it should be one to one and onto

Answer 5

yes thanks i just wanted to make sure i am correct