Instantaneous Rate of Change
Graphically
We can find the instantaneous rate of change at this point by determining the slope of the tangent line.
Intervals
Preceding Interval using the unit before it(x-h, f(x-h)) and (x, f(x)), where h is a small positive number.
Following Interval using the unit after (x, f(x)) and (x+h, f(x+h)), where h is a small positive value.
Centered Interval using the units in between x-h and x+h, where h is a small positive number.
Difference QuotientThis is the most accurate method to find instantaneous rate of change. This is because h is a very small unit (0.01). 