A series of free, online video lessons with examples and solutions to help Algebra
students learn about parabola conic sections.

Parabolas of the form y = a(x - h)

have a vertex at (h, k)

and opens upwards if a > 0

and opens downwards if a < 0

For x

For y

Conic Sections: Parabolas, Part 1

A quick way to roughly sketch a parabola. Nothing about directrix and focus in this video (look in part 2). Find the vertex, x and y intercepts and do a quick graph.

How to go about finding the directrix and the focus for a parabola

A slightly more involved example of finding the focus and directrix for a parabola.

Find the equation for a parabola given the vertex and given the focus and/or directrix.

Conic Sections: Parabolas, Part 5 (Focus and Directrix)

Find the equation for a parabola given the vertex and given the focus and/or directrix.

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