Write an equation of a parabola with a vertex at the origin and a directrix at y=5

English

2 answers:

Vera_Pavlovna [14]3 years ago

3 0

<span>The standard form is , where the focus is (h,k + p)
vertex at the origin and a directrix at y = 5. p = -5 (focus is (0,-5)
x^2 = -20y OR y = (-1/20)x^2</span>

AysviL [449]3 years ago

3 0

The answer is:

$y=-\frac{1}{20}x^2$

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