Find the Vertex of the Parabola $$f ( x ) = - \frac { 1 } { 3 } x ^ { 2 } + 9 x - 3$$

question 151

Multiple Choice

Find the vertex of the parabola.
- $$f ( x ) = - \frac { 1 } { 3 } x ^ { 2 } + 9 x - 3$$

• A) \(( 27 , - 3 )\)
• B) \(\left( \frac { 27 } { 2 } , \frac { 231 } { 4 } \right)\)
• C) \(( - 27 , - 489 )\)
• D) \(\left( - \frac { 27 } { 2 } , - \frac { 741 } { 4 } \right)\)

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