Algebra Unit 3 Arithmetic Sequences Problem Set Quiz

Determine if each sequence is an arithmetic sequence. If yes, identify the common difference.

1. 4, 7, 9, 12...​ (a)  

2. 15, 13, 11, 9...​ (b)   ​ (c)  

3. 7, 10, 13, 16...​ (d)   ​ (e)  

• no
• yes
• d=-2
• d=3

Determine whether each sequence is an arithmetic sequence. If yes, identify the common difference.

4. -6, -5, -3, -1...​ (a)  

5. -13, -6, 1, 8...​ (b)   ​ (c)  

6. -9, -14, -19, -24...​ (d)   ​ (e)  

• no
• yes
• d=7
• d=-5

• 19

• 17

• 23

• 27

• 12

• 14

• 11

• 10

• -1

• -3

• -4

• -5

• -13

• -14

• -17

• -20

• 47

• -70

• -3n+2

• 2n-1

• -5n+1

• -70

• -3n+2

• -119

• 145

• -5n+1

• 6n+1

• -119

• 145

• -6n+1

• -145

• 6n+1