finding hyperbola vertices, ect.

Find the vertices, foci, and the equations of the asymptotes of the hyperbola.

http://college.hmco.com/blackboard/t...s/hl2202_1.gif http://cengage.blackboard.com/images/spacer.gif

I am having trouble with this because I can't seem to find the right "a"

When I put the equation in standard form would "a" be 1 or 9/1? and then when I get the vertices I use the equation: (h+a,k) and (h-a,k). So it would be (0+1,0) or (0+9,0) and neither of these are the correct answer.