Hi,
x^2/25 - y^2/24 = 1 C(0,0), Opening right and left along y = 0
Vertices (-5,0) and (5,0), foci (-7,0) and (7,0)
Note: |sqrt(25 + 24)| = 7
Standard Form of an Equation of an Hyperbola opening right and left is:
with C(h,k) and vertices 'a' units right and left of center, 2a the length of the transverse axis
Foci are
units right and left of center along y = k