Carole compared function 1, y = 4x + 5, to function 2, a linear function that goes through the points shown in the table.


x y
2 12
4 24
6 36
8 48

Which function has the greater rate of change, and what is its rate of change?

A.
Function 1 has the greater rate of change, and its rate of change is 4.

B.
Function 1 has the greater rate of change, and its rate of change is 6.

C.
Function 2 has the greater rate of change, and its rate of change is 4.

D.
Function 2 has the greater rate of change, and its rate of change is 6.