Turn to the back page in your little green book.

Add these vocab words: When you add or subtract to get the next term in a sequence Sequence Term Common Difference Arithmetic Sequence The same number is added or subtracted An individual number in a sequence A set of numbers in a certain order

Objective: Determine if a sequence is arithmetic and find the next term in a sequence. Lesson 4-7

Vocabulary (put this on your note sheet) Arithmetic Sequence: A sequence (list) of numbers with a common difference Common Difference: The number that is added to a number in the sequence to get the next number

21, 24, 27, 30… Arithmetic sequence +3 Common difference Terms 3336

Example 7-1a Determine whether –15, –13, –11, –9,... is arithmetic. Justify your answer. –15–13–11 –9 +2 Answer: There is a common difference of 2. This sequence IS arithmetic. +2 Example 1

Determine whether each sequence is arithmetic. a. 2, 4, 8, 10, 12,... b. 5.9, 5.5, 5.1, 4.7, …. Example 7-1c Answer: This is NOT an arithmetic sequence. Answer: This IS an arithmetic sequence

Example 7-2a Find the next three terms of the arithmetic sequence. –8, –11, –14, –17,... –8–11–14 –17 –3 –3 –3 The common difference is – –3 Answer: The next three terms are –20, –23, –26. Find the common difference Example 2 Continue this pattern: -20 –3 -23 –3 -26

Example 7-2b Find the next three terms of the arithmetic sequence. 5, 12, 19, 26,... Answer: 33, 40, How did we get this answer?? The common difference is

Next, you should: 1. Copy the assigned problems down from the next slide 2. Go to the Glenco website (log in directions are on the course syllabus) 3. For chapter 4, complete the self check quizzes for sections your results for each to 5. Complete the assignment from your book For each of these quizzes, SHOW YOUR WORK on your note page from today

Assignment: 1. Lesson 4-7, p. 236 # Go to the Glenco website and complete the Strongly Recommended: 2. Chapter 4 Study Guide and Review, p. 246 #17-20, 24, 26, 28, 31, 34, 37-41, 46, 50 Chapter 4 Test: Monday *** If you want to check out fun links such as Coolmath.com, you must : 1.Show both completed assignments above 2.Complete all 5 self check quizzes from Glenco and results to Mrs. Lynn at