1. Lesson 4-7
Arithmetic Sequences

2. Definitions Sequence- A set of numbers in a specific order.
Terms- The numbers in a sequence.
Arithmetic Sequence- When the difference between successive terms is constant.
Common Difference- The difference between terms.

3. Determine whether each sequence is arithmetic. Justify your answer.
-15, -13, -11, -9, …

4. Find the next three terms of the arithmetic sequence -8, -11, -14, -17, …

5. nth Term of an Arithmetic Sequence- an = a1+ (n - 1)d.

6. Find the 9th term in the arithmetic sequence 7, 11, 15, 19, …

7. Consider the arithmetic sequence -8, 1, 10, 19, …
Write an equation for the nth term of the sequence.
Find the 12th term in the sequence.
Graph the first five terms of the sequence.