Checking For Understanding (Arithmetic Sequences)

An arithmetic sequence is given below.

2, 9, 16, 23, ...

Which is the explicit formula for the n^th term a_n?

• a_n = -7n+9

• a_n = 7n-5

• a_n = 7n-9

• a_n = -7n+5

Tags

CCSS.HSF.BF.A.2

Identify the common difference.
3, 7, 11, 15, ...

• 6
• 5
• 4
• 2

Tags

CCSS.HSF.BF.A.2

Which kind of sequence has a common difference?

• Arithmetic
• Geometric

Tags

CCSS.HSF.BF.A.2

Write the explicit formula for the sequence.

9, 5, 1, -3, ...

Tags

CCSS.HSF.BF.A.2

Write a recursive rule for the sequence -10, -3, 4, 11, ...

• a_n = a_n-1 - 7

• a_n = a_n-1 + 8

• a_n = a_n-1 - 8

• a_n = a_n-1 + 7

Tags

CCSS.HSF.IF.A.3

An arithmetic sequence has these properties:

a₁ = 2

a_n = a_(n-1) + 5

What are the first four terms of the sequence?

• 2, 5, 10, 15

• 2, 5, 7, 12

• 2, 7, 9, 14

• 2, 7, 12, 17

Tags

CCSS.HSF.BF.A.2

Select the rule that represents the sequence.

Tags

CCSS.HSF.BF.A.2

Is this sequence arithmetic:

2, 4, 8, 16

• Yes

• No

Tags

CCSS.HSF.BF.A.2

• explicit formula

• exquisite formula

• recursive formula

• repulsive formula

Tags

CCSS.HSF.BF.A.2

• explicit formula

• exquisite formula

• recursive formula

• repulsive formula

Tags

CCSS.HSF.BF.A.2