This calculus video tutorial provides a basic introduction into the instantaneous rate of change of functions as well as the average rate of change.  The average rate of change is equal to the slope of the secant line and the instantaneous rate of change is equal to the slope of the tangent line.  You can find the instantaneous rate of change by evaluating the first derivative function at a point.  

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Derivatives - Fast Review:            
Calculus 1 - Derivatives

Equation of the Tangent Line:                          
How To Find The Equation of The Tangent Li...

Derivatives - Horizontal Tangent Line:      
How to Find The Point Where The Graph has ...

The Equation of The Normal Line:            
How To Find The Equation of the Normal Line

The Equation of The Secant Line:              
How To Find The Equation of a Secant Line

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Average and Instantaneous Velocity:        
Average Velocity and Instantaneous Velocity

Instantaneous Rate of Change:                  
Instantaneous Rate of Change

Derivatives of Rational Functions:                
Derivatives of Rational Functions

Derivatives of Radical Functions:                
Derivatives of Radical Functions

Derivatives of Fractions:                                
How To Find The Derivative of a Fraction -...

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Derivatives - Higher Order:                          
Higher Order Derivatives

Simplifying Derivatives:                            
Simplifying Derivatives

Derivatives - The Product Rule:                  
Product Rule For Derivatives

Derivatives - The  Quotient Rule:                
Quotient Rule For Derivatives

Derivatives - The Chain Rule:                              
Chain Rule For Finding Derivatives

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