What is the slope rate of change of the following table? X 2 4 6 8 10 y 9 12 15 18 21 02 000

X⋅2=2X

4=2X

6=2X

8=2X

10y⋅9=90y

12=90y

15=90y

18=90y

21=90y

2=90y

0=90y

correct choice is b

step-by-step explanation:

when you calculate the average rate of change of a function, you are finding the slope of the secant line between the two points. for the function the average rate of change from point to point can be calculated as

to find the average rate of change from day 2 to day 10, note that at day 2, 8 houses were sold, so a(2,8) and at day 10, 2 houses were sold, so b(10,2). thus,