2) Find the equation of the tangent line in slope intercept form to the curve x² + 4xy + y2 = 13 at the point (2,1)

Find an equation of the tangent line to the parabola y=3x2 at the point 1,3.

Q/ Find the equation of the tangent to the test subject y = Vsin 4x , and passes through the point (5,-4)

A duck's flight is given by the following expression: y = x^2 + x + 4. X and y are coordinates of its flight. When x = 2, the duck takes a hit and thereafter its flight follows the trajectory of a tangent line. What is the coordinate when x=4.