Match the steps to find the equation of the parabola with focus (-1, -8.75) and directrix y=- 9.25. Find the distance from the focus to
1.
(x+1)+ y +875 ) =( y+9.25 )?
x2 + 2x+1=2y +9
the point on the parabola.
2.
X+1 + y +8.75
Choose a point on the parabola.
Find the distance from the point on
3. Use (x, y).
the parabola to the directrix.
4.
y =
X+X
Square both sides and simplify.
+x-4
x+1)+ y +8.75
5.
y +9.25
Write the equation of the parabola.
Set the distance from focus to the
6.
y +9.25
point equal to the distance from directrix
to the point