Arithmetic Sequences
Arithmetic sequences have a common __________.
Difference
Is the following an arithmetic sequence:
42, 35, 28, 21, 16
If so, write the explicit formula.
No.
35 - 42 = -7
28 - 35 = -7
21 - 28 = -7
16 - 21 = -5
Is the following an arithmetic sequence:
1 , 7, 13, 19, 25...
If so, write the explicit formula.
an = 1 + (n - 1)(6)
7 - 1 = 6
13 - 7 = 6
19 - 13 = 6
25 - 19 = 6