### Home > GC > Chapter 2 > Lesson 2.1.5 > Problem2-54

2-54.

Graph the line $y=\frac{3}{4}x$ on graph paper.

1. Draw a slope triangle.

2. Rotate your slope triangle $90º$ around the origin to get a new slope triangle. What is the new slope?

3. Find the equation of a line perpendicular to $y=\frac{4}{3}x$.

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 (Desmos)