Question

I need help don't even know where to begin

Answer 1

domain is all the x's
and range is all the y's

so domain is {1, 2, 3, 4}
and range is {2, 7, 12, 17}

Answer 2

Hello
The domain is the numbers of the line x, and the y is the range numbers.
(1,2)
(2,7)
(3,12)
(4,17)