Creating equations for parabolas
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Give the focus, directrix, and axis for each parabola:
1. x^2= 1/8y
Write an equation for each parabola with vertex at the origin:
1. through (-2, -2 square root 2), opening left
2. through (2,-4), symmetric with respect to the y-axis
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This solution shows how to create an equation for a parabola.
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Give the focus, directrix, and axis for each parabola:
1. x^2= 1/8y
We have x^2 = (1/8)y = 4py, then p = 1/32
So the directrix is y = -1/32, the focus is (0, ...
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