Question

What is the nth term rule of the linear sequence below?

-9,-5,-1,3,7,.....
what is the TN=
explain to me, please?
Thanks

Answer 1

4n -13

Explanation:

notice that the difference between the adjacent terms is 4.

nth term is given by:

nth term = first term + (n-1) × difference -n is any number

= -9 + (n-1) × 4

= -9 + 4n -4

= 4n -13