Find the Center, Foci, and Vertices of the Ellipse $$\frac { x ^ { 2 } } { 81 } + \frac { y ^ { 2 } } { 9 } = 1$$

question 194

Multiple Choice

Find the center, foci, and vertices of the ellipse.
- $$\frac { x ^ { 2 } } { 81 } + \frac { y ^ { 2 } } { 9 } = 1$$

• A) center at \(( 0,0 )\)
• foci at \(( - 6 \sqrt { 2 } , 0 )\) and \(( 6 \sqrt { 2 } , 0 )\)
• vertices at \(( - 9,0 ) , ( 9,0 )\)
• B) center at \(( 0,0 )\)
• foci at \(( 0 , - 3 )\) and \(( 0,3 )\)
• vertices at \(( 0 , - 9 ) , ( 0,9 )\)
• C) center at \(( 0,0 )\)
• foci at \(( 0 , - 6 \sqrt { 2 } )\) and \(( 0,6 \sqrt { 2 } )\)
• vertices at \(( 0 , - 9 ) , ( 0,9 )\)
• D) center at \(( 0,0 )\)
• foci at \(( - 9,0 )\) and \(( 9,0 )\)
• vertice at \(( - 81,0 ) , ( 81,0 )\)

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Definitions:

James Marcia

A developmental psychologist best known for his work on adolescent identity formation and his theory of identity status.

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