$\"\"$

\

The system of inequalities are $\"\"$ , $\"\"$ , $\"\"$ and $\"\"$ . \ \

\

Graph:

\

Graph the inequalities are $\"\"$ , $\"\"$ , $\"\"$ and $\"\"$ .

\

$\"\"$

\

Observe the graph:

\

The coordinates are $\"\"$ , $\"\"$ and $\"\"$ .

\

$\"\"$ \ \

\

The equations are $\"\"$ and $\"\"$ .

\

Solve the equations.

\

$\"\"$ (First equation)

\

$\"\"$ (Substitute $\"\"$ )

\

$\"\"$ (Add $\"\"$ to each side)

\

$\"\"$ (Apply additve inverse property: $\"\"$ )

\

$\"\"$ (Add $\"\"$ to each side)

\

$\"\"$ (Apply additve inverse property: $\"\"$ )

\

$\"\"$ (Divide each side by $\"\"$ )

\

$\"\"$ (Cancel common terms) \ \

\

Find $\"\"$ .

\

$\"\"$ (Second equation)

\

$\"\"$ (Substitute $\"\"$ )

\

$\"\"$ (Multiply)

\

$\"\"$ (Subtract: $\"\"$ )

\

The vertices of the quadrilateral are $\"\"$ , $\"\"$ , $\"\"$ and $\"\"$ .

\

$\"\"$

\

Graph of the inequalities are $\"\"$ , $\"\"$ , $\"\"$ and $\"\"$ is

\

$\"\"$

\

The vertices of the quadrilateral are $\"\"$ , $\"\"$ , $\"\"$ and $\"\"$ .