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6-87.

Set up a graph and plot four points that form the vertices (corners) of a rectangle. Then write the coordinates of the four points. 

When drawing your graph, make sure that the quadrilateral has four right angles. Otherwise, it is not a rectangle.

Coordinates are written in the form . The -axis is horizontal, and the -axis is vertical.

Use the eTool to help solve the problem.
Click the link at right for the full version of the eTool: 6-87 HW eTool