Two functions, A and B, are described as follows:Function Ay = 9x + 4Function BThe rate of change is 3 and the y-intercept is 4.How much more is the rate of change of function A than the rate of change of function B? 2 3 6 9

function A : y = 9x + 4....the slope (or rate of change) = 9

function B : y = 3x + 4....the slope (or the rate of change) = 3

so the rate of change of function A is 6 more then the rate of change in function B