Saturday, April 23, 2005

Math Blogging, Part 2

Find the equation for each of the three parabolas for which the coordinates of the focus and the equation of the directrix are given. I kept getting incorrect answers, until I realized that the coordinates were of the focus, not the vertex.
Parabola 1
focus=-3,-2 y=-6
Parabola 2
focus+4,-3 y=6
Parabola 3
focus=4,0 x=-2

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