Find the Vertex of the Graph of the Quadratic Function $f ( x ) = x ^ { 2 } - 11 x - 7$

Multiple Choice

Find the vertex of the graph of the quadratic function.
- $f ( x ) = x ^ { 2 } - 11 x - 7$

A) $( 13 , - 7 )$
B) $( - 11,235 )$
C) $\left[ - \frac { 11 } { 2 } , \frac { 335 } { 4 } \right]$
D) $\left( \frac { 11 } { 2 } , - \frac { 149 } { 4 } \right)$