Find the Directrices of the Ellipse $16 x ^ { 2 } + 81 y ^ { 2 } = 1296$

question 263

Multiple Choice

Find the directrices of the ellipse.
- $16 x ^ { 2 } + 81 y ^ { 2 } = 1296$

• A) \(x = \pm \frac { 81 } { \sqrt { 97 } }\)
• B) \(y = \pm \frac { 9 } { \sqrt { 65 } }\)
• C) \(y = \pm \frac { 81 } { \sqrt { 65 } }\)
• D) \(x = \pm \frac { 81 } { \sqrt { 65 } }\)

---

Definitions:

Territories

Physically or ideologically defined areas that are claimed or occupied by individuals or groups.

Extensively

In a widespread, comprehensive, or thorough manner, covering a wide area or scope.

Third Places

Social settings separate from the two usual social environments of home (first place) and work (second place), providing essential community and social interaction spaces.

Online

Connected to or available through the Internet or other digital network infrastructure.