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OpenStudy (anonymous):
1) Derive the equation of the parabola with a focus at (0, 1) and a directrix of y = −1. 2) Derive the equation of the parabola with a focus at (−2, 4) and a directrix of y = 6. Put the equation in standard form. 3) Derive the equation of the parabola with a focus at (−5, 5) and a directrix of y = -1. 4) Derive the equation of the parabola with a focus at (2, −1) and a directrix of y = −one half. 5) Derive the equation of the parabola with a focus at (−5, −5) and a directrix of y = 7.
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