2010006008 | math4u.vsb.cz

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2010006008

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Parabola is a set of points that are equidistant from the point (focus) and the line (directrix). Find the equation of the directrix of the parabola

x^{2} + 4 x + 8 y - 20 = 0

.

y - 5 = 0

y - 1 = 0

x = 0

x + 4 = 0