The directrix and focus of a parabola determine its shape, size, and direction. There is a formula for finding the directrix and focus. Examples are included.

Learn how to find the focus and directrix of a parabola and see examples that walk through sample problems step-by-step for you to improve your math knowledge and skills.

Learn how to find the equation of a parabola with its focus and directrix in this bite-sized video lesson. Enhance your geometry skills by taking a quiz for practice.

Learn how to derive the equation of a parabola given its focus and directrix, and see examples that walk through sample problems step-by-step for you to improve your math knowledge and skills.

Learn how to find the directrix from the general form of an equation, and see examples that walk through sample problems step-by-step for you to improve your math knowledge and skills.

Learn how to find the focus and directrix of a parabola in vertex form, and see examples that walk through sample problems step-by-step for you to improve your math knowledge and skills.

Master the directrix and focus of a parabola with our concise video lesson. Learn the equation and see examples, followed by a quiz to test your understanding.

The definition of a parabola is related to the distance between it, its focus, and its directrix. The distance between a parabola and its focus is the same as that between the parabola and its directrix.

A parabola is the set of all points that have a greater y value than a single point, called the focus of the parabola, and a lesser x value than a single point, called the directrix of the parabola.

Here are the steps to find of the directrix of an ellipse. Step 1 : Convert the equation in the standard form of the ellipse. Step 2 : Compare the...