55–64 ■ Finding the Equation of a Conic Find an equation for the conic section with the given properties.
The parabola with vertex and directrix the -axis.
The equation for the conic section.
The parabola with vertex and directrix the axis.
The equation of parabola with horizontal axis is given by:
The equation of the directrix is .
Vertex is , so , .
The directrix is , so .
The equation of hyperbola is
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