$\"\"$

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The equation of ellipse is $\"\"$ .

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Rewrite the equation.

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$\"\"$

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$\"\"$

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$\"\"$

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Divide each side by 9.

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$\"\"$

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The standard form of ellipse equation is $\"\"$ ,

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Where center $\"\"$ , $\"\"$ is the length of semi-major axis and $\"\"$ is length of semi-minor axis.

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Compare the equation with standard form of ellipse.

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Center $\"\"$ .

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Major axis is $\"\"$ .

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Minor axis is $\"\"$ .

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$\"\"$

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Find eccentricity.

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For ellipse: $\"\"$ .

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$\"\"$

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Eccentricity $\"\"$ .

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$\"\"$ .

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$\"\"$

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Eccentricity of the ellipse is $\"\"$ .