Find the Vertex of the Graph of the Function $y = 9 x ^ { 2 } + 6 x + 4$

Multiple Choice

Find the vertex of the graph of the function $y = 9 x ^ { 2 } + 6 x + 4$ by using the formula $x = - b / ( 2 a )$ .

A) $( 24,5,332 )$
B) $\left( - \frac { 1 } { 3 } , 3 \right)$
C) $\left( \frac { 1 } { 3 } , 7 \right)$
D) $( - 24,5,044 )$
E) $\left( - \frac { 1 } { 3 } , 7 \right)$