Are my answers correct?

a) (0, 4/3) and (2,0) and (-2, 0)
b) Horizontal asymptote: $y = 3$, Vertical asymptotes: $x = 3, x = -3$
c) Extremum is at $(0, 4/3)$, maximum.
Are my answers correct?

a) (0, 4/3) and (2,0) and (-2, 0)
b) Horizontal asymptote: $y = 3$, Vertical asymptotes: $x = 3, x = -3$
c) Extremum is at $(0, 4/3)$, maximum.
Yes, all of the answers are correct. In future, maybe try and show your work as well, just in case there is a mistake? (This is an answer because I am answering the original question.)