A parabola is the collection of all points P in a plane that are the same distance d from a fixed point F as they are from a fixed line D. The point F is called the focus of the parabola, and the line D is its directrix. As a result, a parabola is the set of points P for which the distance between the focus F and the point P is equal to the distance between the point P and another point on the directrix perpendicular to P[br][br][center][b][size=150][size=200][size=100]d(F,P) = d(P,D)[/size][/size][/size][/b][/center][br]Using the distance formula [br][center][math]d=\sqrt{\left(x_1-x_0\right)^2+\left(y_1-y_0\right)^2}[/math][size=200][/size][/center]Find the equation of the parabola.