Find the Vertex of the Graph of the Quadratic Function $$f ( x ) = - x ^ { 2 } + 9 x - 9$$

Multiple Choice

Find the vertex of the graph of the quadratic function.
- $$f ( x ) = - x ^ { 2 } + 9 x - 9$$

A) $( - 9 , - 171 )$
B) $\left( - \frac { 9 } { 2 } , - \frac { 279 } { 4 } \right)$
C) $( 9 , - 9 )$
D) $\left( \frac { 9 } { 2 } , \frac { 45 } { 4 } \right)$