SOLUTION: Find an equation of the parabola described then graph the parabola. Focus(-2,1); Vertex(-3,1)
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Question 984603: Find an equation of the parabola described then graph the parabola. Focus(-2,1); Vertex(-3,1)
Answer by josgarithmetic(39620) (Show Source): You can put this solution on YOUR website!
Knowing vertex and focus, you can find the directrix.; the distance between vertex and the focus is the same distance between the vertex and the nearest point on the directrix.
The number p is the distance between the vertex and the focus. Knowing p and the vertex, you can write an equation for the parabola directly.
Your parabola opens toward the left, so you will have a form like .
Either or both of these video presentations will help:
Equation of parabola, vertex at origin - Derivation
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Equation of parabola, vertex not at origin, focus and directrix given - general
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