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

Multiple Choice

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

A) $\left( \frac { 7 } { 2 } , \frac { 139 } { 4 } \right)$
B) $( 7,96 )$
C) $( - 5 , - 2 )$
D) $\left( - \frac { 7 } { 2 } , - \frac { 57 } { 4 } \right)$