The graph of [math] is given below:



Consider the cases:
[math]

Part (a) For each case, state whether or not [math] is continuous at the given point:
(Enter "y" for yes, "n" for no.)

(1)       (2)       (3)
(4)       (5)

Part (b) For each case, determine if [math] is continuous from the right, or from the left, or neither.
(Enter "r", "l", or "n", respectively below. In the case of continuity at a point from both sides, enter "b".)

(1)       (2)       (3)
(4)       (5)