SOLUTION: Find the standard form of the parabola, where the vertex is (3, 2), and the directrix is x = 1.

Algebra ->  Finance -> SOLUTION: Find the standard form of the parabola, where the vertex is (3, 2), and the directrix is x = 1.      Log On


   



Question 1121357: Find the standard form of the parabola, where the vertex is (3, 2),
and the directrix is x = 1.

Found 2 solutions by josgarithmetic, greenestamps:
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
8%28x-3%29=%28y-2%29%5E2 and you can multiply and change the form if you want or need.

Focus is at (5, 2) on the concave side.

Answer by greenestamps(13200) About Me  (Show Source):
You can put this solution on YOUR website!


The directrix is the vertical line x=1, and the vertex is (3,2). So the parabola opens to the right.

One standard form of the equation is

x-h+=+%281%2F%284p%29%29%28y-k%29%5E2

where the vertex is (h,k) and p is the distance from the vertex to the directrix and from the vertex to the focus.

In this example, the vertex is 2 to the right of the directrix, so p=2. Then the equation is

x-3+=+%281%2F8%29%28y-2%29%5E2