Identify the Vertex and Focus of the Parabola $y ^ { 2 } = - 7 x$

Multiple Choice

Identify the vertex and focus of the parabola $y ^ { 2 } = - 7 x$ .

A) vertex: (0,0) focus: $\left( - \frac { 7 } { 4 } , 0 \right)$
B) vertex: (0,0) focus: $\left( - \frac { 1 } { 7 } , 0 \right)$
C) vertex: (0,0) focus: (-7,0)
D) vertex: (0,0) focus: $\left( 0 , \frac { 7 } { 4 } \right)$
E) vertex: (0,0) focus: $\left( 0 , \frac { 1 } { 7 } \right)$