All parts of this problem refer to the function below. $$y = (2 + 3 x)^{4/x}.$$

1. Use logarithmic differentiation to find $\dfrac{dy}{dx}$.
   $\dfrac{dy}{dx} =$
2. Find the slope of the tangent line at $x = 1$.
   Slope =
3. Find the equation of the tangent line at $x = 1$.
   Tangent line: $y =$