For which of the following functions is the average rate of change from x = -1 to x = 2 equal to ?

Answer 1

You forgot to write the function(s). Just plug the X's to the function, find the corresponding Y's, then use the formula

(Y2 - Y1)/ (X2 - X1).

Answer 2

Taking your tangential difference or rise-over-run helps you know the rate of change during a section or part of a function. Were you going to post the options of the functions to choose from?

For example if the change in Y is 2, and you are given also this change in x values as mentioned x= -1. to x= 2,. You would do:

Change in y-values/change in x-values

(2-0)/(2- -1)=

Subtracting a negative value is the same as addition.

2/3, so in this scenario. The rate of change is 0.67.