Question

Which of the following illustrates an Arithmetic Sequence?
A.1, 4, 9, 16, ...
B.-10, -3, 4, 11, ...
C.2, 9, 17, 26, ...
D.-1, 1, -1, 1, ...​

Answer 1

Answer:

d.

Step-by-step explanation:

d= a2 - a1

d= 1-(-1)

d=2

therefore -1, 1, -1, 1 is an ap