Question

The first term in the sequence below is 2.

2, -5, -12, -19, -26

Which expression can be used to find the nth term in this pattern?

-2n+7
-7n+2
-7n+9
n-7

Answer 1

-7n + 9 because the common difference is -7, so you have -7n, and then by plugging in the term numbers and the values, you find out that you need to add 9 to the -7n, so the answer is -7n + 9