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
Parabola Focus & DirectrixPlot of the parabola with its vertex, focus, and directrix line.directrixFV