Section 10.5: Parabolas
PreCalculus
April 08, 2016
General Form
Opens up/downx2 + Dx + Ey + F = 0
Opens right/lefty2 + Dx + Ey + F = 0
Section 10.5: Parabolas (Day 2)
Standard Form
Opens up/down(x-h)2 = 4p(y-k)
Opens right/left(y-k)2 = 4p(x-h)
1. Write in standard form
y2 - 8y - x + 18 = 0
Section 10.5: Parabolas
PreCalculus
April 08, 2016
2. Write in standard form
2x2 - 8x + y + 6 = 0
Write an equation for the parabola in standard form.3.) Vertex is at the origin, a focus is at (0, -4)
4.) Focus is at (-3, 2), directrix is at y = -6
Section 10.5: Parabolas
PreCalculus
April 08, 2016
5.) Parabola passes through the point (9, -2), has a vertex at (5, -1) and opens downward. Write the equation in standard form.