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AP EAMCET20228 Jul 2022Morning ShiftMathematicsParabolaActual

The equation of directrix of parabola x^2+8 x+12 y+4= 0 is

Options

  1. Ay+4=0
  2. By-1=0
  3. Cy-4=0
  4. Dy-2=0

Correct answer

C. y-4=0

Step-by-step solution

Given parabola is x^2+8 x+12 y+4=0 This can be written as (x+4)^2=4(-3)(y-1) Here, V=(-4,1) and equation of Directix, Y=4 or y-4=0

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