SOLUTION: Write the standard form of the equation of the parabola with focus at (-2, 5) and directrix at x = 4.

Algebra ->  Quadratic-relations-and-conic-sections -> SOLUTION: Write the standard form of the equation of the parabola with focus at (-2, 5) and directrix at x = 4.      Log On


   

Question 1136329: Write the standard form of the equation of the parabola with focus at (-2, 5) and directrix at
x = 4.
Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
Directrix is line represented by (4,y).

Use Distance definition as a possible way to start.

sqrt%28%28x-%28-2%29%29%5E2%2B%28y-5%29%5E2%29=sqrt%28%28x-4%29%5E2%2B%28y-y%29%5E2%29
Simplify and put in the form you want.