3) Find the equation of the tangent line to the curve a} x3 xy +3};S = 3 at the point [1, 1) b) y = ('1 + Bx at the point with x=1 4) A 10-foot ladder is placed against a vertical wall. Suppose that the bottom of the ladder slides away from the wall at a constant rate of 3 feet per second. How fast is the top of the ladder sliding down the wall when the bottom is 6 feet from the wall