The gradient of a straight line graph is calculated as:
for two points
We can now define the average gradient between two points even if they are defined by a function which is not a straight line,
This is the same as Equation 1.
The gradient of a straight line graph is calculated as:
for two points
We can now define the average gradient between two points even if they are defined by a function which is not a straight line,
This is the same as Equation 1.
Fill in the table by calculating the average gradient over the indicated
intervals for the function






AB  
AC  
BC 
What do you notice about the gradients over each interval?
The average gradient of a straightline function is the same over any two intervals on the function.
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