How do I find the asymptotes of:

y = -(x-8)/(x+4)

I am assuming that it is (h,k) in f(x) = a/b(x-h) + k but there is no k meaning it should equal to zero however that is not one of the multiple choice answers for the horizontal asymptote. The vertical asymptote is the value of h, right? Meaning it should be - 4, right?

Assuming that I am right for the vertical asymptote, someone please help me find the horizontal one.

Any help would be GREATLY appreciated!

Thanks!