SOLUTION: Need this problems solution... Find the equation of the parabola whose focus is at the point (-1,3) and vertex is at the point (4,3)

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Question 836751: Need this problems solution...
Find the equation of the parabola whose focus is at the point (-1,3) and vertex is at the point (4,3)
Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
Find the equation of the parabola whose focus is at the point (-1,3) and vertex is at the point (4,3)
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This is a parabola that open leftward.
Its basic equation: (x-h)^2=-4p(y-k), (h,k)=(x,y) coordinates of vertex.
..
vertex: (4,3)
axis of symmetry:y=3
p=5 (distance from focus to vertex on the axis of symmetry.)
4p=20
equation:(y-3)^2=-20(x-4)