Question

How do i solve this function? (Number 28)

Answer 1

For ever input, there is one ouput

it means we can't repeat the same x with a different y
but repeats of y's are allowed



pick any numbers that haven't been used as an input

-5 isn't taken
0 is taken
11 is taken
-1 is taken
2 is not taken
17 is taken


so -5 and -1 or A and D are the answers