Question

what is the standard equation for a hyperbola that is centered at the origin and opens left and right

Answer 1

standard equation for a hyperbola that is centered at the origin and opens left and right
\[\frac{ y-h }{ a^2 }^2-\frac{ y-k }{ b^2 }^2\]
where Pt(h,k) is a center with vertices 'a' units right and left of center.

Aythng else?