The standard form of hyperbola centered at origin (where
) is
(Transverse axis is horizontal) or
(Transverse axis is vertical).
The equation of hyperbola is
.
The
- term is positive, so the transverse axis is horizontal and vertices occur at
.
Moreover, the endpoints of the conjugate axis occur at 
The hyperbola,
graph is
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The center of the hyperbola is (0, 0) and its vertices are
.