Linear Sequences (nth term)

Question 1

What is the first step of finding the nth term in a linear sequence?

Answer 1

Finding a common difference

E.g. the common difference of 3, 7, 11, 15 is +4

Question 2

What is the second step?

Answer 2

Write the sequence for your common difference and compare them.

E.g. 3, 7, 11, 15
4, 8, 12, 16 subtract 1

Answer 4n-1