Answer
The next three terms are $1,-\frac{1}{3},\frac{1}{9}$.
The graph is shown below.
Work Step by Step
The given sequence is
$81,-27,9,-3,...$
Use table to organize the terms.
Each term is divided by $-3$ to the previous term. So, the common ratio is $-3$.
Divide a term by $-3$ to find the next term.
Plot the ordered pairs $(n,a_n)$.
The complete table is shown below.