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7-40.

has coordinates and . Draw on graph paper.  

  1. If is dilated through the origin by a scale factor of , what are the coordinates of the vertices of the image, ?

    Multiply each coordinate by . Then graph the new triangle.

  2. Determine the following ratios.

    1.  

    1.  

  3. Segment connects points and . Point lies on and . Determine the coordinates of point .

Use the eTool below to model the problem.
Click the link at right for the full version of the eTool: INT2 7-40 (c) HW eTool