how do you determine if a sequence of numbers is arithmetic? I was absent when it was taught and my teacher won't help me. PLEASE HELP!!!!
T2-T1 = T3-T2=t4-T3 =..... = d
An arithmetic sequence has a constant difference between two consecutive terms.
Ex:
1, 5, 9, 13, 17, ...
-46, -44, -42, -40, ...
20, 18, 16, 14, ...
