Hi
Standard Form of an Equation of an Hyperbola opeing right and left is
where Pt(h,k) is a center with vertices 'a' units right and left of center.
x^2/16-y^2/25=1 C(0,0) with vertices V(-4,0) and V(4,0) - the x-intercepts
Foci(c=
: F(-6.4,0) and F(6.4,0)
Asymptotes: y = ± (5/4)x