Question

Find an equation for the nth term of the arithmetic sequence.
-17, -13, -9, -5,

Answer 1

an = -17 +4(n -1)

Explanation:

The difference (d) between terms is constant at 4. The first term (a1) is -17. For an arithmetic sequence, the general term is ...

an = a1 + d(n-1)

For the values of this sequence, that is ...

an = -17 +4(n -1)