Write the Equation of the Ellipse That Has Its Center $$\frac { x ^ { 2 } } { 80 } + \frac { y ^ { 2 } } { 81 } = 1$$

question 13

Multiple Choice

Write the equation of the ellipse that has its center at the origin,focus at (1,0) and vertex at (9,0) . ​

• A) \[\frac { x ^ { 2 } } { 80 } + \frac { y ^ { 2 } } { 81 } = 1\]
• B) \(\frac { x ^ { 2 } } { 1 } + \frac { y ^ { 2 } } { 9 } = 1\)
• C) \(\frac { x ^ { 2 } } { 81 } + \frac { y ^ { 2 } } { 80 } = - 1\)
• D) \(\frac { x ^ { 2 } } { 81 } - \frac { y ^ { 2 } } { 80 } = 1\)
• E) \(\frac { x ^ { 2 } } { 81 } + \frac { y ^ { 2 } } { 80 } = 1\)

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