The compound inequalities are
.
Solve the first inequality
to find k.
Subtract 2 from each side.
\

Solve the second inequality
to find k.
Subtract 2 from each side.
\

So
and
.The solution set is
.
Graph the solution set on a number line.
\
Note: A dot means that this point is included in the solution set and a circle means that this point is not included in the solution set.
The solution set is
and the compound inequality,
of number line graph is
