3 A curve with equation \(y = \mathrm { f } ( x )\) passes through the point (3, 7) Given that \(\mathrm { f } ^ { \prime } ( 3 ) = 0\) find the equation of the normal to the curve at ( 3,7 )
Circle your answer.
$$y = \frac { 7 } { 3 } x \quad y = 0 \quad x = 3 \quad x = 7$$