Function 2: the line passing through the points (1, 6) and (3, 10).

which of these functions has the greater rate of change?
a) function 1, because the slope is 5 and the slope of function 2 is 4.
b) function 1, because the slope is 4 and the slope of function 2 is 2.
c) function 2, because the slope is 7 and the slope of function 1 is 5.
d) function 2, because the slope is 5 and the slope of function 1 is 4.