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Find an equation for the ellipse described. Graph the equation.
-Center at focus at contains the point
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Q130: <span class="ql-formula" data-value="\frac{y^{2}}{4}-\frac{x^{2}}{16}=1"><span class="katex"><span class="katex-mathml"><math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mfrac><msup><mi>y</mi><mn>2</mn></msup><mn>4</mn></mfrac><mo>−</mo><mfrac><msup><mi>x</mi><mn>2</mn></msup><mn>16</mn></mfrac><mo>=</mo><mn>1</mn></mrow><annotation encoding="application/x-tex">\frac{y^{2}}{4}-\frac{x^{2}}{16}=1</annotation></semantics></math></span><span
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