SOLUTION: Parabola;vertex at (-1,3);directrix x=-7

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Question 1172039: Parabola;vertex at (-1,3);directrix x=-7
Answer by josgarithmetic(39630) About Me  (Show Source):
You can put this solution on YOUR website!
What help do you want, exactly?
The focus is on the other side of the vertex than the directrix.
Distance from vertex to directrix is 10 units. This means focus is 10 units above (-1,3). You might begin by forming an equation like %28x%2B1%29%5E2=4p%28y-3%29. Taking as p=10, you can finish this.