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OpenStudy (kimberly_pr):
Calculate the average rate of change for the graphed sequence from n = 2 to n = 4.
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OpenStudy (phi):
was the sequence (1,4), (2,8), etc ?
OpenStudy (kimberly_pr):
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)
OpenStudy (kimberly_pr):
@phi and @dinamix
OpenStudy (phi):
which points correspond to n=2 and n= 4 ? (I would choose the 2nd and the 4th!)
OpenStudy (phi):
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 ?
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OpenStudy (kimberly_pr):
Yes :) Give me a sec to try and solve this
OpenStudy (kimberly_pr):
I got -3.3125, which is one of the answers!! Thanks soo much :)
OpenStudy (phi):
yes, that looks good.
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