SOLUTION: determine whether the sequence is arithmetic if it is find the common difference 3,5/2,2,3/2,1,1/2

Question 734773: determine whether the sequence is arithmetic if it is find the common difference 3,5/2,2,3/2,1,1/2

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
determine whether the sequence is arithmetic if it is find the common difference 3,5/2,2,3/2,1,1/2
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Subtract the pairs as they progress to see if there is a common difference:
(5/2)-3 = -1/2
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2-(5/2) = -1/2
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(3/2)- 2 = -1/2
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1-(3/2) = -1/2
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(1/2)-1 = -1/2
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It is arithmetic and the common difference is -1/2
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Cheers,
Stan H.
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