Find the absolute maximum and minimum values of the function over the indicated? interval, and indicate the? x-values at which they occur.

Find the absolute maximum and minimum values of the function over the indicated interval, and indicate the x-values at which they occur. f(x) = x - 6x - 4; [2,6] The absolute maximum value is at x = (Use a comma to separate answers as needed.) The absolute minimum value is at x = (Use a comma to separate answers as needed. )