Question

Which statement below best describes a function? 1. A function is a relationship where each output has the exactly one input. 2. A function is a relationship where each input has exactly one output. 3.A function is a relationship where each input has the same output. 4.A function is a relationship where each input has different outputs.​

Answer 1

2.A function is a relationship where each input is exactly one output

Tell me if im wrong pls