CCSS.Math.Content.HSF.IF.A.3

Find the common ratio: 16, 8, 4, 2, ...

• r = 2
• r = 8
• r = 1/4
• r = 1/2

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CCSS.Math.Content.HSF.IF.A.3

Find the sequence; 9, -18, 36, -72...........

• adding 9
• multiply by -2

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CCSS.Math.Content.HSF.IF.A.3

Is the following sequence arithmetic?
21, 13, 5, -3, ...

• YES
• NO

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CCSS.Math.Content.HSF.IF.A.3

Find 26th term in the arithmetic sequence: -15, -35, -55, -75, ...

• -515
• -490
• -535
• 460

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CCSS.Math.Content.HSF.IF.A.3

Find the first 6 terms of the sequence

• 1, 2, 6, 18, 54, 162

• 2, 6, 18, 54, 162, 486

• -2, -6, -18, -54, -162, -486

• -2, 1, 4, 7, 10, 13

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CCSS.Math.Content.HSF.IF.A.3

Which of the following equations is recursive?

• f(n) = f(n-1) +4
• f(n) = 2n - 5

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CCSS.Math.Content.HSF.IF.A.3

Write a recursive formula for the following sequence:

16,8, 4, 2,...

• a₁=16

  a_n=a_n-1 (2)

• a₁=16

  a_n=a_n-1 (1/2)

• a₁=16

  a_n=a_n-1 + (1/2)

• a₁=16

  a_n=a_{n-1 +} (2)

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CCSS.Math.Content.HSF.IF.A.3

Find the common difference: 1, 201, 401, 601, ...

• d = 100
• d = 101
• d = 200
• d = 201

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CCSS.Math.Content.HSF.IF.A.3

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.

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CCSS.Math.Content.HSF.IF.A.3

The Recursive Formula for the Arithmetic Sequence is:

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CCSS.Math.Content.HSF.IF.A.3