Answer
$-\frac{1}{8}, \frac{1}{4}, -\frac{1}{2}, 1, -2, 4$
Work Step by Step
Write the first six terms by multiplying by the common ratio $-2$ to get the next term. The problem tells us that we start at -1/8.
$-\frac{1}{8}, \frac{2}{8}=\frac{1}{4}, -\frac{2}{4}=-\frac{1}{2}, 1, -2, 4$
Because we are multiplying by a negative, the terms alternate between negative and positive.