Question

This set of ordered pairs is a function (22, 4), (21, 1), (0, 0), (1, 1), and (2, 4).

Please explain like you were teaching how you can know this is a function.

Answer 1

Explanation:

You know these ordered pairs are considered a function, because the x intercepts do not repeat themselves. In other words, each input numbers are different. If these ordered pairs were not a function, the x intercept would be repeating. For example, 22 is already a x intercept, (22,4), if 22 was put in as another x intercept like,(22,1) these ordered pairs would not be a function.