Parabola Focus & Directrix
Focus, directrix, and vertex of a parabola
y = 0.5x² + (0)x + (-1)
Vertex
(0, -1)
Focus
(0, -0.5)
Directrix
y = -1.5
Axis of symmetry
x = 0
Focal parameter (p)
0.5
Latus rectum
2
Opens
Upward
Focus, directrix, and vertex of a parabola