Question

Is {(2,3), (4,5), (-2, -1), (0,1)} a function or not give a reason for your answer

Answer 1

Explanation:

yes, it is a function.

the reason : every value of x (2, 4, -2, 0) has exactly one assigned value of y : 2 to 3, 4 to 5, -2 to -1, 0 to 1.

that is the definition of a function.