Question

Derive the equation of the parabola with a focus at (−5, 5) and a directrix of y = −1

Answer 1

@Michele_Laino @taramgrant0543664 @UsukiDoll

Answer 2

first What is the equation for a parabola

Answer 3

no idea

Answer 4

To find a quadratic equation from a parabola using distances, use the combined distance formula.
\[\sqrt{(y_2-y_1)^2+(x_2-x_1)^2}=\sqrt{(y_2-y_1)^2}\]

Plug in the focus on the left side of the equation. Plug in the directrix on the right side.