lath 126 3. (12 pts.) (a) What is the average rate of change of the function f(x)= 1 = from -3 to -1/2? (b) What the equation of the secant line through (-3, f(-3)) and (-1/2, f(-1/2))? Write your answers in terms reduced fractions. (c) Sketch a graph of f and the secant line.