**Q9: **

For a function , the average rate of change between a fixed point and another point is . Given that , find when .

**Q10: **

Find the average rate of change of when varies from 1.3 to 2.

**Q11: **

Consider the average rate of change of the function over the interval with small values of .

Simplify the expression .

- A
- B
- C
- D
- E

The average rate of change gets closer and closer to as becomes smaller and smaller. Simplify the expression for the difference between and .

- A
- B
- C
- D
- E

For what values of is the difference exactly , , . Give your answer as a fraction.

- A , ,
- B , ,
- C27, ,
- D , ,
- E27, ,

**Q12: **

What is the average rate of change function for the function ?

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- D