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What is the d value in the following arithmetic sequence? -7, -2, 3, 8, . 

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shaeboo12 | eNotes Newbie

Posted July 18, 2013 at 3:09 AM via web

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What is the d value in the following arithmetic sequence? -7, -2, 3, 8, . 

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llltkl | College Teacher | (Level 3) Valedictorian

Posted July 18, 2013 at 3:33 AM (Answer #1)

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The given arithmetic sequence is -7, -2, 3, 8, .

The d value or the common difference is the difference between any two consecutive terms in an arithmetic progression.

 

To find the common difference, subtract a pair of terms. It doesn't matter which pair is picked, as long as they are right next to each other:

-2-(-7)=-2+7=5

3-(-2)=3+2=5

8-3=5

The difference is always 5.

So, d=5.


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