Calculate the average rate of change for the graphed sequence from n = 2 to n = 4.

Question

phi · Answer

was the sequence  (1,4), (2,8), etc ?

kimberly_pr · Answer

The sequence (points on the graph) is complicated :/ it's  
(1,-3) (2,-3.5) (3,-6.75) (4,-10.125) (5,-15.1875) (6,-22.78125)

kimberly_pr · Answer

@phi and @dinamix

phi · Answer

which points correspond to n=2  and n= 4 ?  (I would choose the 2nd and the 4th!)

phi · Answer

the average rate of change is also the *slope* between those 2 points.

do you know how to find the slope =  change in y  divided by change in x ?

kimberly_pr · Answer

Yes :)
Give me a sec to try and solve this

kimberly_pr · Answer

I got -3.3125, which is one of the answers!! Thanks soo much :)

phi · Answer

yes, that looks good.