Question 448008: Is the following sequence arithemtic? if,so idenitfy the common difference of -16,-22,-29,-37
Answer by Edwin McCravy(20056)   (Show Source):
You can put this solution on YOUR website! -16,-22,-29,-37
Let's find out if it's an arithmetic sequence:
2nd term - 1st term = (-22) - (-16) = -22+16 = -6
3rd term - 2nd term = (-29) - (-22) = -29+22 = -7
No, it's not because we didn't get the same thing
for both of those subtractions.
If it had been an arithmetic sequence those would
have had to be the same common difference and also
4th term - 3rd term = (-37) - (-29) = -37+29 = -8
would have had to have been the same common
difference. So this is not an arithmetic sequence.
Edwin
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