Question

The hyperbola with center at (0, 0) opening horizontally, with a = 2, b = 5.

Answer 1

I dont know if this is what you are looking for but i think this is the answer of the question you are looking for which is the general equation of a horizontal hyperbola: 
(x-h)²/a² - (y-k)²/b² = 1 
with 
center (h,k) 
What you need to do is replace the data and do the calculations