Question

Find a formula for the nth term in this

arithmetic sequence
(picture is attached)
please help, thank you

Answer 1

nth term: n+6

Explanation:

a1 gives -7 and a2 gives -1. Let's compare these two numbers. From -7 to -1, we need a +6. Since -7 + 6 = -1.

a2 to a3, -1 + 6 = 5

a3 to a4, -5 + 6 = 11