anonymous
  • anonymous
Find the standard form of the equation of the parabola with a focus at (0, -2) and a directrix at y = 2. https://i.gyazo.com/3a74217c9b4bc16836574bddf8afe2c0.png
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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welshfella
  • welshfella
the curve passes through the origin and as the focus is negative it opens downwards standard form of this type is x^2 = 4ay where a = focus so can you work it out?
anonymous
  • anonymous
ok give me sec
anonymous
  • anonymous
am i plugging in -2?

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welshfella
  • welshfella
yes I should have said a = y-coordinate of the focus
anonymous
  • anonymous
ok
anonymous
  • anonymous
x^2 = 4(-2)y x^2 = -8y
welshfella
  • welshfella
ok so far the standard form is y =
welshfella
  • welshfella
so divide both sides by -8
anonymous
  • anonymous
y = (x^2)/-8
welshfella
  • welshfella
yea thats ok but its usually written as |dw:1439835011279:dw|
anonymous
  • anonymous
but thats none of the answer choices
welshfella
  • welshfella
what are the answer choices
anonymous
  • anonymous
its the link in the question
anonymous
  • anonymous
oh wait i was looing at the wrong question. yea youre right
welshfella
  • welshfella
its choice C
anonymous
  • anonymous
*Looking
anonymous
  • anonymous
yea i know now lol. thanks
welshfella
  • welshfella
yw

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