Question

find rate of change f(x)=3x^2+6
from 2 to 4
from 0 to 2
from -3 to 0

Answer 1

Average slope:
\[m=\frac{\triangle y}{\triangle x}=\frac{y_2-y_1}{x_2-x_1}\]


Slope is the rate of change is it not? ;-)

Answer 2

To find your y coordinate values, you need to plug these inputs in for x