The vertices of rectangle shaded region are
.
Therefore shaded region have four solid boundary lines and let be these lines are \ \
.
Let the shaded region is right of the line
and it contain vertices are
.
Let the shaded region is left of the line
and it contain vertices are
.
Let the shaded region is below the line
and it contain vertices are
.
Let the shaded region is above the line
and it contain vertices are
.
_(2_4)_(6_4)_(6_1).gif\")
Observe the graph, the boundary line
for the shaded region is
. Because the shaded region is above the line
, the inequality is
.
The boundary line
for the shaded region is
. Because the shaded region is below the line
, the inequality is
.
The boundary line
for the shaded region is
. Because the shaded region is right of line
, the inequality is
.
The boundary line
for the shaded region is
. Because the shaded region is left of line
, the inequality is
.
The system of inequalities are
.