Answer 1

Yes.

See the value of y when x = 8 or x = -8. Same with other values. You need to calculate based on the equation and see whether it matches.

Answer 2

I have one last question
x - 2= 1/8(y+1)^2

how will that look like in a graph? because i try graphing in a graph er and it says error ..is there a way i can? :S

Answer 3

You need to express it as:
y = something.

Answer 4

x - 2= 1/8(y+1)^2
is this the graph
http://i729.photobucket.com/albums/ww292/akatushi101/ayooamama.jpg