Answer
(i) The sequence is geometric.
(ii) The next two terms are: $6$ and$-6$.
Work Step by Step
A sequence is:
(a) arithmetic if there is a common difference among the terms.
(b) geometric if there is a common ratio among the terms.
Notice that in the given sequence:
$-6 \div 6 = -1
\\6 \div -6 = -1$
This means that the sequence has a common ratio of $-1$.
Thus, the sequence is $\underline{\text{geometric}}$.
The next two terms can be found by multiplying $-1$ to the previous term.
Therefore, the next two terms are:
$-6 \times (-1) = 6
\\6 \times (-1) = -6$