The rate of change is the slope. f(x) is the same as y... f(x) = 3x + 9.....y = 3x + 9....and in y = mx + b form, the rate of change(slope) can be found in the m position.
y = mx + b y = 3x + 9....so the slope or rate of change is 3...not 9...so answer is false
