Ask Question
18 June, 06:58

What is the directrix of the parabola defined by 1/4 (y 3) = (x-2) ^2?

+5
Answers (1)
  1. 18 June, 09:45
    0
    For

    (x-h) ^2=4p (y-k)

    vertex = (h, k)

    p=vertical distance from vertex to directix

    when p is negative, the directix is above the vertex

    when p is positive, the directix is below the vertex

    (x-2) ^2=1/4 (y+3)

    (x-2) ^2=4 (1/16) (y+3)

    p=1/16

    it's positive so we know directix is below vertex

    vertex is (2,-3)

    go 1/16 down

    -3-1/16=-48/16-1/16=-49/16

    directix is y=-49/16 aka y=-3.0625
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “What is the directrix of the parabola defined by 1/4 (y 3) = (x-2) ^2? ...” in 📙 Mathematics if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers