You can put this solution on YOUR website! Find the average rate of f(x)= 1/2x-3 between x=a and a+h
----
Average = (change in "Y")/(change in "x")
--------
Aver = [f(a+h)-f(a)] /[a+h - a]
------
f(a+h) = (1/2)(a+h) - 3 = (1/2)a + (1/2)h - 3
f(a) = (1/2)a - 3
---------------------------
Then f(a+h)-f(a) = (1/2)h
-----
Ans: Ave = [(1/2)h]/h = 1/2
--------------------
Comment:: Notice that the average is the slope of f(x)
--------------------
Cheers,
Stan H.
(