Question 971173
One focus and a directrix:
Use the definition of parabola and the Distance Formula.


Distance from set of points to the focus is equal to distance from set of points to the directrix.


{{{sqrt((x-2)^2+(y-(-3))^2)=sqrt((x-6)^2+(y-y)^2)}}}


When that equation makes sense, then simplify it into whatever form you want.