Standard form of a parabola with vertex at (h, k):
Axis of symmetry: _________
Vertical: opens up/down:
________________________________
Focus: _______________
Directrix: _______________
Horizontal: opens left/right: ______________________________
Axis of symmetry: _________
Focus: _______________
Directrix: _______________
Vertical (x
)
Horizontal (y
)
2
2
p is positive: opens up
p is negative: opens down
p is positive: opens right
p is negative: opens left
Find the vertex, axis of symmetry, focus, and directrix of each parabola and sketch its graph.
1)
=
Vertex: ______________
Axis of Symmetry: ______________
p = ______________
a = ______________
Focus: ______________
Directrix: ______________
2) ( − )
= ( + )
Vertex: ______________
Axis of Symmetry: ______________
p = ______________
a = ______________
Focus: ______________
Directrix: ______________