Answer
(i) The sequence is geometric.
(ii) The next two terms are: $7$ and $-7$.
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:
$-7 \div 7 = -1
\\7 \div -7 = -1$
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:
$-7 \times -1 = 7
\\7 \times -1 = -7$
