Write an Equation for the Hyperbola $x$ -Intercepts $( \pm 9,0 )$

question 272

Multiple Choice

Write an equation for the hyperbola.
- $x$ -intercepts $( \pm 9,0 )$ , foci at $( - \sqrt { 117 } , 0 ) , ( \sqrt { 117 } , 0 )$

• A) \(\frac { x ^ { 2 } } { 81 } - \frac { y ^ { 2 } } { 117 } = 1\)
• B) \(\frac { x ^ { 2 } } { 36 } - \frac { y ^ { 2 } } { 81 } = 1\)
• C) \(\frac { x ^ { 2 } } { 117 } - \frac { y ^ { 2 } } { 81 } = 1\)
• D) \(\frac { x ^ { 2 } } { 81 } - \frac { y ^ { 2 } } { 36 } = 1\)

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