Question

Are thes coordinates a function or not?

(2,2)

(2,7)

(-2,9)

(-4,-5)​

Answer 1

No

Explanation:

A function is a special type of relation for which there is a rule that pairs each input with exactly one output

Answer 2

This is not a function. There are multiple outputs for the same input at
`x=2`. A function only has 1 output for every input.