1)

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The standard form of ellipse equation is

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\"\"

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Find the ellipse equation.

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Observe the graph,

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The center and radius of the circle \"\"

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\"\"

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The horizontal ellipse equation is

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\"\"

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2)

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Find length of the minor axis.

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Observe the graph,

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The center and radius of the circle \"\"

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Length of the minor axis is \"\"

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3)

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Find the ellipse equation.

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Observe the graph,

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The center and radius of the circle \"\"

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\"\"

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The horizontal ellipse equation is

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\"\"

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4)

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The standard form of ellipse equation is

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\"\"

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Find the foci.

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Observe the graph,

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The center and radius of the circle \"\"

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Center is

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\"\"

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Foci general form is \"\"

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The foci is \"\"