PLEASE HELPFor the graphed function f(x) = −(3)x − 1 + 3, calculate the average rate of change from x = 1 to x = 3.

the formula would be ( f(x2) -f(x1) ) / ( x2 - x1 ) f(x2)= -6 , f(x1) = 2 , x2= 3 , x1= 1. so that is : (-6 - 2 ) / (3-1) = -8/2 = -4