Two functions, A and B, are described as follows:

Function A
y = 9x + 4

Function B
The 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
I believe the answer is either C or B but I am stuck

No its c

functionA

y = 9x + 4 ---->rate of change = 9
functionB
y = 3x + 4 ----> rate of change = 3

so what do you think?

To compare the rate of change of two functions, we need to compare the coefficients of the variable x in the equations of the functions.

In Function A, we have: y = 9x + 4.

The coefficient of x in Function A is 9, which represents the rate of change.

In Function B, we are given that the rate of change is 3.

Comparing these values, we can see that the rate of change of Function A is greater than the rate of change of Function B, since 9 is larger than 3.

Therefore, the correct answer is option D: 9.

Um B.