Arithmetic Sequences Review

Find the common difference of the arithmetic sequence 1, -2, -5, ...

3, 5, 7, ... is an arithmetic sequence

• True

• False

What is the rule (explicit equation) for the n^th term given 
60, 55, 50, 45, ...

• a_n= -5+60n

• a_n= -5n+55

• a_n= -5n+65

• a_n= 5n+55

Write the explicit rule for the arithmetic sequence
12, 10, 8, 6, ...

• a_n = 12n - 14

• a_n = 2n - 14

• a_n = -2n + 14

• a_n = -12n + 14

Find the 5th value?

Which explicit equation represents the data in this table?

• y = -16x-8

• y = 8x+0

• y = -8x-16

• a_n = a_n-1 - 8

Choose the correct recursive equation.

• a₀ = -7

  a_n = a_n-1 + 9

• a₀ = -16

  a_n = a_n-1 + 9

• y = 9x -7

• y = 9x - 16

Check the boxes that give the missing terms AND the common difference.

1.5, -2.5, _______, ________ , -14.5

• common difference = +1

• -6.5, -10.5

• common difference = -4

• -3.5, -4.5

Check the explicit and recursive functions that match the table.

• a₀ = -2

  a_n = a_n-1 + 3

• y = 3x -2

• y = 1x + 3

• a₀ = 1

  a_n = a_n-1 + 3

What is the 100th term in the sequence a_n = 4n-12

• 388

• 40012

• -388

• 100