Determine the Two Equations Necessary to Graph the Ellipse with a Graphing

question 42

Multiple Choice

Determine the two equations necessary to graph the ellipse with a graphing calculator.
- $$\frac { x ^ { 2 } } { 81 } + \frac { y ^ { 2 } } { 64 } = 1$$

• A) \(y = \frac { 8 \sqrt { 81 - x ^ { 2 } } } { 9 }\) and \(y = - \frac { 8 \sqrt { 81 - x ^ { 2 } } } { 9 }\)
• B) \(x = \sqrt { \frac { 576 - x ^ { 2 } } { 8 } }\) and \(x = - \sqrt { \frac { 576 - y ^ { 2 } } { 8 } }\)
• C) \(\mathrm { y } = \frac { 8 \sqrt { 81 - \mathrm { x } ^ { 2 } } } { 81 }\) and \(\mathrm { y } = - \frac { 8 \sqrt { 81 + \mathrm { x } ^ { 2 } } } { 81 }\)
• D) \(x = \frac { 9 \sqrt { 81 - y ^ { 2 } } } { 64 }\) and \(x = - \frac { 9 \sqrt { 81 - y ^ { 2 } } } { 64 }\)

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