la7nChellLas
la7nChellLas la7nChellLas
  • 16-07-2016
  • Mathematics
contestada

Derive the equation of the parabola with a focus at (−2, 4) and a directrix of y = 6. Put the equation in standard form.

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Аноним Аноним
  • 24-07-2016
 

The solution would be like this for this specific problem:

-4(y - 5) = (x + 2)² 

-4y +20 = x² +4x + 4
-4y = x² +4x - 16
4y = -x² -4x + 16
 y = -1/4x² -x + 4
 
The equation in standard form is y = -1/4x² -x + 4.

I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.

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gutierreznoah85
gutierreznoah85 gutierreznoah85
  • 19-01-2022

Answer:

its b

Step-by-step explanation:

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