a) Find dy/dt, dx/dt, [math]\frac{\frac{dy}{dt}}{\frac{dx}{dt}}[/math] [br]Now you see the graph of the parametric equations shown below.[br]b) Evaluate [math]\frac{\frac{dy}{dt}}{\frac{dx}{dt}}[/math]at t = -1, 0 and 1.[br]c) Click on the check box Show Tangent. Describe the tangent line at t = -1, 0, 1.[br][br]d) Compare your answer in part b with the slope of the tangent line at t = -1, 0, 1.