In which of the relations represented by the tables below is the output a function of the input?

Select all correct answers.

Select all that apply:

$\backslash$table$[[$Input$,-1,6,2,6],[$Output$,1,13,9,0]]$

$\backslash$table$[[$Input$,-1,8,6,-2],[$Output$,11,12,0,11]]$

$\backslash$table$[[$Input$,-2,5,4,5],[$Output$,8,4,12,-2]]$

$\backslash$table$[[$Input$,-5,7,9,4],[$Output$,14,5,-2,-2]]$