Question

Describes the domain of the graph I'm having trouble with the problem

Answer 1

1) Considering that the Domain is the set of inputs of a function, usually denoted by x

Let's analyze the values considering the x-axis

2) As we can see the white (open) endpoint on x=9 means the Domain does not include that value, and the closed endpoint (black), on the other hand for x= -7 it does.

So we can write that the Domain is

C). D = [-7, 9) or -7 ≤x< 9