Question

Is the following relation a function?

x y
−1 −2
2 3
3 1
6 −2
a Yes

b No

Answer 1

i believe it is a function because there is only one y value for every x value presented

Answer 2

This is a function because for every input there is exactly one output.

Answer 3

it is a function, but the reason is because the first values do not repeat