Vertical Axis of Symmetry: (opens upwards) or (opens downwards) (h, k) = vertex of parabola Vertical Axis of Symmetry: Horizontal Axis of Symmetry: Vertex: Parabola: Focus: (opens to the right) or Directrix: (opens to the left) Trigonometric Form: Horizontal Axis of Symmetry: Parabola (h, k) = vertex of parabola Vertex: Projectile Motion: Focus: Directrix: feet meters General Form: where A and D have the same sign
Parabola Vertical Axis of Symmetry: Vertex: Focus: Directrix: Horizontal Axis of Symmetry: Vertex: Focus: Directrix: Parabola: Trigonometric Form: Vertical Axis of Symmetry: (opens upwards) or (opens downwards) (h, k) = vertex of parabola Horizontal Axis of Symmetry: (opens to the right) or (opens to the left) (h, k) = vertex of parabola Projectile Motion: feet meters General Form: where A and D have the same sign
Harolds_Precalculus_Cheat_Sheet_2017.docx