Arithmetic Sequences Day 1

What is the common difference?
-3, 8, 19, ...

• 3
• 8
• 11
• not arithmetic

What is the common difference?
5, 9, 12, ...
(Hint:  Write your formula and then simplify it.)

• 3
• 4
• not arithmetic
• 5

What is the common difference of the sequence :

6 , 12, 18, 24, . . .

• 6

• - 6

• 30

• • 30

What is the common difference of the sequence :

87, 80, 73, . . .

• 10

• -10

• 7

• -7

What is the common difference of the sequence :

0.17, 0.77, 1.37, . . .

• 6

• -0.6

• -6

• 0.6

The first three terms of an arithmetic sequence are as follows

13, 19, 25

What are the next two terms of the sequence?

• 31 and 37

• 31 and 36

• 30 and 37

• 30 and 36

Which sequence is NOT an arithmetic sequence?

• -7, -13, -19, -25,...

• -10, -6, -2, 2,..

• 6, 8, 10, 12,...

• 3, 15, 75, 375,...

What is the common difference of the sequence 2, -1, -4, -7,...?

• -3

• -1

• -2

• 3

What is a₁ in the following sequence?

-6, -14, -22, -30, ...

• -6

• -14

• -22

• -30

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