Answer
Domain is the values x can be.
Range is the values y can be.
1st Graph)
D: -8 < x < 3
R: 3 < y < 9
2nd Graph)
D: -4<x<4
R: -4<y<4
3rd Graph)
-Note that this graph has an open and closed circle. Which means one is open and the other is closed on the interval. I will use brackets to make it easier.
D: [-4,3)
R: (-6,2)