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101Ryan101

  • 4 years ago

what is a directrix?

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  1. babygirlx7
    • 4 years ago
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    A line perpendicular to the axis of symmetry used in the definition of a parabola. A parabola is defined as follows: For a given point, called the focus, and a given line not through the focus, called the directrix, a parabola is the locus of points such that the distance to the focus equals the distance to the directrix.

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