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Question 8 At what x-value does the function f (@) = + have a discontinuity? Oz =3 O This is a continuous graph. 02=0 O* = -3 Question 9 If lim f(x) # f(2), then the function is: O Discontinuous at = = 2 O Continuous at 2 = 2 O Constant at a = 2 O Not defined at = = 2 Question 10 If a function is continuous at a = a, what does this imply about the left-hand and right-hand limits? O They must both exist and be equal O They must not exist O They must be equal to zero O One must exist