1/08 Math 1: Ch 6 Quiz 1: Arithmetic Sequences

Identify the common difference.

-6, -3, 0, 3, 6....

• 4

• 3

• -4

• -3

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CCSS.HSF.BF.A.2

Write a recursive formula for the following sequence:

10, 5, 0, -5,...

• a₁= 10

  a_n= a_n-1 - 5

• a₁= 10

  a_n= a_n-1 + 5

• a₁= 10

  a_n= a_n (5)

• a₁= 10

  a_n= a_n-1 (5)

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CCSS.HSF.IF.A.3

What does a₁ represent?

• Any term

• First term

• Last term

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CCSS.HSF.BF.A.2

Each individual number in a sequence of numbers is called what?

• Common difference
• Successive term
• Term
• Geometric term

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CCSS.HSF.BF.A.2

Given a₁= 5 and d= 2 find a₆

• 13

• 10

• 15

• 17

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CCSS.HSF.BF.A.2

This is an arithmetic sequence. 5, 2, –1, –4, . . .

What is a₇ ?

• -13

• -11

• -18

• -22

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CCSS.HSF.BF.A.2

Arithmetic sequences involve

• multiplication and division
• multiplication and addition
• addition and subtraction
• subtraction and division

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CCSS.HSF.BF.A.2

Find the next three terms:
5, 8, 11, 14...

• 16, 19, 22
• 17, 19, 21
• 17, 20, 23
• 16, 18, 20 

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CCSS.HSF.BF.A.2

Write the recursive formula for 6, 17, 28, 39, 50....

• a_n=a_n-1+11
  a₁=6
• a_n=a_n-1-4
  a₁=6
• a_n=a_n-1+9
  a₁=6
• a_n=a_n-1+6
  a₁=6

Tags

CCSS.HSF.BF.A.2

Given the recursive formula, find the first four terms:
a_n = a_n-1 + 5
a₁ = -16

• -16, -21, -26, -31
• 5, -11, -27, -43
• -16, -80, -500, -200
• -16, -11, -6, -1

Tags

CCSS.HSF.BF.A.2