average rate of change
The difference quotient of \(f\) at the point \(c\) is defined as the ratio:
\[
\frac{\Delta y}{\Delta x} = \frac{f(c+h)-f \left(c \right)}{h}
\]
The difference quotient of \(f\) at the point \(c\) is defined as the ratio:
\[
\frac{\Delta y}{\Delta x} = \frac{f(c+h)-f \left(c \right)}{h}
\]