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8-49.

On graph paper, graph if , , and .

  1. What is (the length of )?

    Use the Pythagorean Theorem to find the length of

  2. Reflect across the -axis to form . What are the coordinates ? Describe a function, , that would map the coordinates of to .

    When describing a function for a transformation, look at one point and its image and determine what changes happen to the -coordinate and the -coordinate.

Use the eTool below to answer the parts of the problem.
Click the link at right for the full version of the eTool: Int1 8-49 HW eTool