For the function f(x), (a) find f(1), f(-1), and f(2), (b) sketch the graph of the piecewise-defined function, (c) determine the domain of f, and (d) determine the range of f. 6x - 4 ifx= 1 f(x ) = x +4 if x > 1 (a) Evaluate f(x) at the value specified. f(1) =] f( - 1) =] f(2 ) = (b) Sketch the graph of f(x). Choose the correct graph below. O A. O B. O C. OD. AY (c) The domain of f is . (Type your answer in interval notation.) (d) The range of f is . (Type your answer in interval notation.)