1/x+3 ; [-1 , -2/3 ] find the average rate of change

Question

find the average rate of chang of the funtions over the given interval

Answer 1

f(-1) = 1/(-1+3) = 1/2

f(-2/3) = 1/(-2/3 +3) = 1/( -2/3 + 9/3) = 1/( 7/3) = 3/7

3/7 - 1/2 = 6/14 - 7/14 = -1/14

-2/3 - (-1) = 1/3

1./14 divided by 1/3 =

1/14 * 3/1 =

3/14