Chevygirl1222 Chevygirl1222

09-06-2015
Mathematics

Answered

from the equation of a parabola identify the focus and directrix:

y^2 + 12x -6y + 21 = 0

Verified Answer :

Panoyin Panoyin

09-06-2015

y² + 12x - 6y + 21 = 0
      - 21 - 21
      y² + 12x - 6y = -21
      12x + y² - 6y = -21
12x + (y² - 6y + 9) = -21 + 9
      12x + (y - 3)² = -12
      -12 -12    -12
      -x + (y - 3)² = 1
   -12

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