AR Unit 1a Review

Define arithmetic sequences.

• A sequence whose terms change by adding the same number each time.

• A sequence whose terms change by multiplying the same number each time.

• A sequence whose terms change by dividing the same number each time.

• A list of numbers that often (but not always) form a pattern.

Define finite difference.

• the product between two consecutive terms of a geometric sequence.

• the product between two consecutive terms of an arithmetic sequence.

• the difference between two consecutive terms of an arithmetic sequence.

• the difference between two consecutive terms of a geometric sequence.

Is the sequence arithmetic: 37, 31, 25, 19, ...

• Yes
• No

Select the rule that represents the sequence.

• 5n+1

• 1(5+n)

• 6 - 4(n - 1)

Select the explicit rule that represents the sequence.

• a_n = 6 + 5(n - 1)

• a_n = 4 + 6(n - 1)

• a_n = 6 - 4(n - 1)

Writing Equations:
Given the following table, write the linear equation.

• y = 9x + 3
• y = 3x + 12
• y = 3x + 9
• y = 1x + 12

How many dots will be in Pattern 4?

• 9

• 13

• 12

• 14

What is the missing number?

__ , 7, 10, 13, 16

• 6

• 4

• 5

• 3

What is the rule for this pattern?

32, 36, 40, 44

• add 4

• multiply 2

• subtract 4

• divide by 2

What are the next two numbers in this pattern?
12, 17, 22, 27, ___, ___

• 32, 37
• 30, 37
• 30, 33
• 32, 35