Arithmetic Sequences

What is a₁ in the following arithmetic sequence?

-8, -4, 0, 4, 8, 12, ...

• 8

• -8

• 4

• 0

What is the common difference in the following sequence?

1, 4, 7, 10, 13....

• -3

• 4

• 3

• 6

Remember: a_n = a₁ + d(n - 1)

what is the value of "d" in the following sequence?

7, 2, -3, -8, -13...

a_n = a₁ + d(n-1)

"n" represents which of the following?

• The first term of a sequence

• the term number

• the common difference

• the last term of a sequence

Recall: a_n = a₁ + d(n - 1)

What is the 18th term of the following arithmetic sequence?

4, -1, -6, -11, -16, ...