step 1:
\The function is  .
.
The function is in the form of piecewise linear equation, there are no denominators and radicals.
\So the domain will exist for all values of  .
.
The domain of the function is  .
.
Step 2:
\The graph of the piecewise linear function  :
:
To plot the graph of the  , find the coordinates points at
, find the coordinates points at  .
.
| \ | \ | \ | 
| -4\ | \ | \ | 
| -3\ | \ | \ | 
| -2\ | \ | \ | 
| -1\ | \ | \ | 
To plot the graph of the  , find the coordinates points at
, find the coordinates points at  .
.
| \ | \ | \ | 
| 0\ | \ | \ | 
| 1\ | \ | \ | 
| 2\ | \ | \ | 
| 3\ | \ | \ | 
| 4\ | \ | \ | 
Graph:
\(1) Draw the coordinate plane.
\(2) plot the points found in the table.
\(3) Connect the plotted points.
\.gif\")
Note : The circle indicates that the point is not included in the function.
\Solution :
\The domain of the function is  .
.