For problems 1-4, use the graph to test the function for continuity at the indicated value of x. 1. la) Is f (x) continuous at x = -1? Explain. 1b) What kind of discontinuity does f (x) have? o 1c) On what open interval(s) is f (x) continuous? 2. 2a) Is f (x) continuous at x = 2? Explain. 2b) What kind of discontinuity does f (x) have? 2c) On what open interval(s) is f (x ) continuous? 2d) How would you remove the discontinuity? 3. 3a) Is f (x) continuous at x = 3? Explain. 3b) What kind of discontinuity does f (x) have? 3c) On what open interval(s) is f (x) continuous? 4. 4a) Is f (x) continuous at x = 1? Explain. 7 7 4 7 4b) What kind of discontinuity does f (x) have? 4c) On what open interval(s) is f (x) continuous? 4d) Define f (x ) as a piecewise function. 4 4+