Determine whether each sequence is an arithmetic sequence. if it is state the common difference help please?

arithmetic-sequence
common-difference

#1

determine whether each sequence is an arithmetic sequence. if it is state the common difference help please?

Answer:

For each term, subtract the term from the one before (the 1st minus the 2nd, the 2nd minus the 3rd, 3rd minus 4th, etc). If the differences are all the same, then the sequence is arithmetic.