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Draw the graph of the system of inequalities below.  

  1. What polygon does the intersection form? Justify your answer.

    The polygon looks like it has perpendicular sides. What are the slopes of the sides?
    Does this tell you they are perpendicular?

  2. What are its vertices?

    Look at the graph to find the vertices.

  3. Find the area of the intersection.

    Each side of the polygon is the hypotenuse of a right triangle with side lengths of .

Use the eTool below to help solve the problem.
Click the link at right for the full version of the eTool: 4-93 HW eTool