Use a Graphing Calculator to Solve the Linear Equation $y _ { 1 }$

Multiple Choice

Use a graphing calculator to solve the linear equation.
-The graph of $y _ { 1 }$ is shown in the standard viewing window. Which is the only choice that could possibly be the solution of the equation $y _ { 1 } = 0$ ?
$$- 30 , - \frac { 31 } { 6 } , \frac { 31 } { 6 } , 30$$

A) $- \frac { 31 } { 6 }$
B) $\frac { 31 } { 6 }$
C) 30
D) $- 30$