Can I please get some help?

[snoopy713]

Find the range, in interval notation, of the graph of y=(x²+4x+3)/(x+4). Round all values to 2 decimal places

 

[tkhunny]

Oblique Asymptote covers the edges, \(\displaystyle (-\infty,?)\cap(??,\infty)\). It there a space in the middle? What methods do we get to use?