Discover Perpendicular Slopes


1. Plot two points using Toolbar Image tool. 2. Use the Toolbar Image tool to create a line going through the two points. 3. Create a line perpendicular to the line you just created in step 2 using the Toolbar Image tool. 4. Use the Toolbar Image tool and click on both lines to find the slopes of both lines. 5. Finally, click on the algebra tab (looks like a calculator). In the input bar type in FractionText(m) to change the slope of the line from step 2 from a decimal to a fraction. Do the same for the perpendicular line, but use FractionText(m_1).

What do you notice about perpendicular slopes?