Functions and domains in algebra?

I am stuck on 2 problems in my algebra homework. I am homeschooled and I dont really have anyone right now to explain to me how to do these problems, so if someone could show me how do do these problems and how to get the answers, id really really really appreciate it,

1. Determine the domain of the function http://postimg.org/image/bawf3n64h/

and the answer choices:

A.All real numbers except -8, -3, and 2

B x ? 0

C All real numbers

D x ? -3, x ? 2


2. Determine whether the graph is the graph of a function.
http://postimg.org/image/culropqsx/

YES or NO