### Home > GC > Chapter 2 > Lesson 2.1.5 > Problem 2-54

2-54.

Graph the line * *on graph paper.

Draw a slope triangle.

Rotate your slope triangle

around the origin to get a new slope triangle. What is the new slope? 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: *2-54 HW eTool*