Find the Slope-Intercept Form of the Equation of the Line $y = \arctan ( 7 x )$

Find the slope-intercept form of the equation of the line tangent to the graph of $y = \arctan ( 7 x )$ when $x = \frac { \sqrt { 3 } } { 7 }$

A) $y = \frac { 7 x } { 4 } + \frac { \pi } { 6 } + \frac { \sqrt { 3 } } { 4 }$
B) $y = \frac { 7 x } { 4 } + \frac { \pi } { 3 } - \frac { \sqrt { 3 } } { 4 }$
C) $y = \frac { 7 x } { 6 } + \frac { \pi } { 6 } + \frac { 1 } { 2 }$
D) $y = \frac { 7 x } { 4 } + \frac { \pi } { 6 } - \frac { \sqrt { 3 } } { 4 }$
E) $y = \frac { 7 x } { 6 } + \frac { \pi } { 6 } - \frac { 1 } { 2 }$