Learning Objective: Log novip s Recognize parametric equations and determine coordinates of a tangent to a curve at a point when parametric equations are involved. In answering items 2-53 through 2-56, refer to the formulas x = mr and y = 2mr. STORE 2-53. The letter r is known as a 1. base on Jody en howfast 2. constant Wod anit tauson 3. parameters ( )9 parametric equation 2-54. If r is eliminated, the relation- ship between x and y is X 2 71 NN X 2-55. If y = 2, what is the value of x? N F F M orif Lanion F = 2ur, the 12- Ar 2-56. If BY = 2" and AX Ar slope of the tangent to the curve at r = 3 is 1 6 bos N. q m