Use a graphing utility to graph the function and visually determine the open intervals on which the

Question:

Use a graphing utility to graph the function and visually determine the open intervals on which the function is increasing, decreasing, or constant. Use a table of values to verify your results.
1. f(x) = 3
2. g(x) = x
3. g(x) = 1/2x2 - 3
4. f(x) = 3x4 − 6x2