A series of free Intermediate Algebra Lessons. How to write the equations of an ellipse? How to graph an ellipse? Learn the eccentricity of an ellipse.

Writing the Equation of an Ellipse

Learn the standard form for the equation of an ellipse with center (0, 0)

How to write the equation of the ellipse given the graph.

Write the equations of the ellipse with vertex (0, 7) and the co-vertex (4, 0).

Horizontal ellipse and vertical ellipse

Example 1: Graph the ellipse \(\frac{{{x^2}}}{9} + {y^2} = 1\) and find the x-intercepts and y-intercepts

Example 2: Graph the ellipse 4x

Learn how to derive that c

\(e = \frac{c}{a}{\rm{ }}\) where \(c = \sqrt {{a^2} - {b^2}} \)

Find the eccentricity and foci of the ellipse 5x

Find the equation of an ellipse given the eccentricity and the foci.

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