Mathematics, 24.08.2019 06:30 cheatcodeb
Which is the standard form of the equation of the parabola that has a vertex of (–4, –6) and a directrix of y = 3?
Answers: 1
when 
is the vertex, p is the distance between the focus and the vertex. We know this because this is a parabola that opens to the left, along the x axis. The directrix is the same distance away from the vertex (in terms of its perpendicular line from it to the vertex) as the focus, so p = 9, since |-6 - 3| = 9 (perpendicular distance from directrix to vertex). We know the vertex is (-4,-6), so we apply all of these values to get the standard form:
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Which is the standard form of the equation of the parabola that has a vertex of (–4, –6) and a direc...
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