Consider the function f(x)=3x.

Question

a. Determine an expression, in terms of a and h, for the average rate of change between the points (a,f(a)) and ( a + h, f(a+h) ) for the function . Show all steps needed to find a simplified algebraic expression.
b. Using your expression from (a), determine the average rate of change from x = -1 to x = 2. Express your answer as an exact value - no decimals!

Answer 1

This is the same type of question as your other previous ones.
Except it is the easiest of them all since f(x) = 3x is just a straight line
Just follow the same steps

Answer 2

I'm a bit confused with what steps I should take though