Let R be the region bounded below by the graph of the function f (x) = _ - 8 and above by the x-axis over the interval [-4, 4]. Find the centroid, (x, y), of the region. Enter answer using exact values. c@ 2 -6 -5 x -4 -3 -2 -1 0 1 2 3 6 -1 -2 -3 -4 -5 -6 - 7