Question

PLZZZZ NEED HELP!!!!!

Answer 1

It's "all values except 4". 4 is a vertical asymptote and the function does not exist there at all.  But the left side comes in from negative infinity and goes down to negative infinity, and on the right it comes down from positive infinity, but since it's getting closer and closer to the horizontal asymptote of y = 0, it's decreasing there too.