donnie1999
  • donnie1999
HELP ME!!! What is the equation of the directrix of a parabola defined by the equation y = x^2 − 2x − 3?
Mathematics
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SOLVED
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schrodinger
  • schrodinger
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donnie1999
  • donnie1999
@aloud
anonymous
  • anonymous
plug it in the desmoes
donnie1999
  • donnie1999
IDK wat a directrix is

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anonymous
  • anonymous
If the parabola is rotated so that its vertex is (h,k) and its axis of symmetry is parallel to the x-axis, it has an equation of (y - k)^2 = 4p (x - h), where the focus is (h + p, k) and the directrix is x = h - p.
donnie1999
  • donnie1999
So would it be y=4
donnie1999
  • donnie1999
@aloud would the answer be y=4
anonymous
  • anonymous
y=-4 x=1
donnie1999
  • donnie1999
so that a yes lol
anonymous
  • anonymous
yes

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