Question

6. Is this relation a function {(−1, 7), (9, 4), (3, −2), (5, 3), (9, 1)}? Why or why not?

Answer 1

No, this relation is not a function. This is because the input value 9 is associated with two different output values, 4 and 1. In a function, each input value must be associated with only one output value.