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

Determine the two equations necessary to graph the ellipse with a graphing calculator.
- $$\frac { x ^ { 2 } } { 16 } + \frac { ( y - 5 ) ^ { 2 } } { 25 } = 1$$

A) $y = \frac { 20 - 5 \sqrt { 16 - x ^ { 2 } } } { 4 }$ and $y = \frac { 5 \sqrt { 16 - x ^ { 2 } } + 20 } { 4 }$
B) $y = \frac { 5 \sqrt { 400 - 25 x ^ { 2 } } } { 20 }$ and $y = - \frac { 5 \sqrt { 400 - 25 x ^ { 2 } } } { 20 }$
C) $y = \frac { \sqrt { 400 - 25 x ^ { 2 } } } { 4 }$ and $y = - \frac { \sqrt { 400 - 25 x ^ { 2 } } } { 4 }$
D) $y = \frac { \sqrt { 800 - 25 x ^ { 2 } } } { 4 }$ and $y = - \frac { \sqrt { 800 - 25 x ^ { 2 } } } { 4 }$

Correct Answer:

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