What are the next two terms in the sequence: - 16, 8, - 4, 2

U have a geometric sequence with a common ratio of - 1/2. That means u can multiply the number by - 1/2 to get the next number.

-16 * - 1/2 = 16/2 = 8

8 * - 1/2 = - 8/2 = - 4

-4 * - 1/2 = 4/2 = 2

2 * - 1/2 = - 2/2 = - 1 <===

-1 * - 1/2 = 1/2 <===

1 and -.5

Each number starting from - 16 is divided by two then turned negative or positive