The graph of a function is shown below. On which interval is the function decreasing and linear? -10 -8 10 - -10 between x = -9 and x = -4 a between x = -4 and x = 1 - between 2 = 1 and x = 6 a between a = 6 and x = 9 131 5 Ev 7 P " 10​