Exercise 22 Page 279

When a sequence is arithmetic, the difference between two consecutive terms is constant. By examining our sequence we can see that this is the case. 1/2 +( - 16) ⟶ 1/3 +( - 16) ⟶ 1/6 +( - 16) ⟶ 0 +( - 16) ⟶ ... Therefore, the sequence is an arithmetic sequence with common difference - 16.