Question

{(-12, 3) (-5,4) (-6,3)
(8.-9) (-6,2) (1,7)

is it a non function or a function? ​

Answer 1

No

Explanation:

These points would not be a function as one x value shares more than one y value. The -6 shares both 2 and 3 as a y value.

In order to have a function, and x value can only have one y value. However, a y value can correspond to multiple x values and it can still be a function.