An exponential function f(x) = ab* passes through the points (0, 4) and (2, 100). What are the values of a and b? a= b= Starting with the graph of f(x) = 6, write the equation of the graph that results when: (a) f(x) is shifted 9 units downward. y = (b) f(x) is shifted 7 units to the right. y = (c) f(x) is reflected about the y-axis. y =