Solve the Problem $y ^ { 2 } = 7 x$

Multiple Choice

Solve the problem.
-If a cross-section of the parabolic mirror in a flashlight has the equation $y ^ { 2 } = 7 x$ x, where should the bulb be placed?

A) $\frac { 7 } { 4 }$ units to the left of the vertex
B) $\frac { 7 } { 2 }$ units to the right of the vertex
C) $\frac { 7 } { 4 }$ units to the right of the vertex
D) $\frac { 7 } { 4 }$ units above the vertex