Answer
$C(0,0), r=1$
See graph.
domain $[-1,1]$, range $[-1,1]$.
Work Step by Step
Step 1. Rewriting the equation as $(x-0)^2+(y-0)^2=(1)^2$, we can identify the center and radius as $C(0,0), r=1$
Step 2. See graph.
Step 3. We can identify the domain as $[-1,1]$ and range as $[-1,1]$.
