1. Plot the following graphs in Cartesian coordinates. [2 = 4x0.5 each] a. y = x for -2 x 2. b. y = x for -2 x 2. c. y = (-4) for -2 x 2. d. y = -4- for all x for which this is defined. 2. Plot the following implicitly defined curves. [2 = 4x0.5 each] a. x + y = 4 for all x and y for which this equation makes sense. b. xy = 1 for all x and y for which this equation makes sense. c. x + 4y = 4 for all x and y for which this equation makes sense. d. (x + y) - 4x (x + y) - 4y = 0 for all x and y for which this equation makes sense. 3. Plot the following parametric curves. [2 = 4x0.5 each] a. x = 2t and y 2t2 for -1