1. Perpendicular Slopes

2. Perpendicular Slopes Perpendicular lines ALWAYS cross at a 90 angle.
This means they meet like the ceiling and the wall.
If two lines meet at a 90 angle, they are ALWAYS perpendicular.
Perpendicular slopes are opposite signs and flipped.
m = o 2 3 -3 2
Perpendicular line’s slope

3. Perpendicular Slopes

4. Perpendicular Slopes

5. Perpendicular Slopes

6. Are The Lines Perpendicular?
y = ½x + 2
y = -2/1x + 3
y = ¾x – 2
y = -4/3x – 3
y = 4/3x – 3
y = 1/5x + 10
y = -5x + 10

7. Find the slope and tell me if the lines are perpendicular:

8. Assignment: