\f5. [1!] points) Determine all points at which the function is discontinuous. H1"): 312 - x -12 ii. [1|] points) Calculate the slope of the line tangent to the given function at the given point. HI) =9 for :r= 5 1 4. (10 points) Plot the parametric curve Use arrows to show the direction of t. Pay attention to the domain of t. x = 2t -2 and y = 2t +5 for - 3