SOLUTION: please help me find the vertex, focus and directrix of the parabola if the question is: (x - 1) + 8(y + 2)^2 = 0

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Question 74502This question is from textbook Heath Algebra 2 An integrated Approach
: please help me find the vertex, focus and directrix of the parabola if the question is:
(x - 1) + 8(y + 2)^2 = 0 This question is from textbook Heath Algebra 2 An integrated Approach

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
find the vertex, focus and directrix of the parabola if the question is:
(x - 1) + 8(y + 2)^2 = 0
(y+2)^2=(-1/8)(x-1)
Vertex at (1,-2)
The parabola opens downward:
4p=(-1/8)
p= -1/32
The directrix is a horizontal line with equation y=-2+1/32 = -63/32
Focus (1,-2-1/32) = (1,65/32)
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Cheers,
Stan H.
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Cheers,
Stan H.