Function relation with domain and range

Question

Determine whether the relation is a function. Give the domain and the range for the relation. {(4,1), (6,2), (8,8)}

Answer 1

Domain 4,6,8

Range 1,2,8

yes, it is a function. To be a function, for each x value, you get one and only one y value.

Answer 2

It's a function

domain is 2,6,8, the x coordinates

range is 1,2, 8, the y coordinates