Which function has a greater rate of change? A.
Y=X4
B.
X Y
-2-11
0-9
2 -7
-
3-6
6-3

Neither, they are equal.
Just look at how y varies with x. We can see that in the table as x increases by two y increase by 2 so the rate of change is just one. Slope is the term for rate of change. Y=x-4 has a slope of 1. 1=1. They have the same rate of change.