Question

{(2,2),(2,5),(2,1),(2,7),(2,-1).(2,-4)) is a function. O True O False

Answer 1

This is not a function since by definition x values can only have one image on y, and we see that in this case it has a l,ot of images on y:

x

(2, 2) (2, 5) (2, 1)