Question

Is this relation a function? {(-1,0). (-1,2). (1,5). (2-8)} No, because at least one input maos to more than one output to because at least one output maps to more than one input Yes because every pottas exactly one output Yes becs every output has exactly one input

Answer 1

EXPLANATION

Given the dots:

{(-1,0). (-1,2). (1,5). (2-8)}

We can see that preimage-point 1 has two images: 0 and 2 so It can not be a function.

No, because at least one input maps to more than one output.