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Home > CCG > Chapter 2 > Lesson 2.1.5 > Problem 2-58


Graph the line  on graph paper.  

  1. Draw a slope triangle.

  2. Rotate your slope triangle around the origin to get a new slope triangle. What is the new slope?

  3. Find the equation of a line perpendicular to .

    Look at the slopes in parts (a) and (b). How are perpendicular slopes related?  

Use the eTool link to graph the function, then draw and rotate a slope triangle.
Click the link at right for the full version of the eTool: 2-58 HW eTool