1. Lesson 2 Notes - Parallel and Perpendicular Lines
- To write equations of parallel and perpendicular lines.

2. Parallel Lines

3. Parallel Lines Lines which do not intersect (touch)
Have the same slope
Different y-intercepts or points

4. Example
Write the equation of the line parallel to y = 3x – 1 which goes through the point (2, 5)

5. U-try
Write the equation of the line parallel to y = ½x + 2 and through the point (-4, 2)

6. Perpendicular Lines

7. Perpendicular Lines Lines which intersect at 90 degree angles
Slopes are opposite sign reciprocals
Ex:

8. Example
Write the equation of the line perpendicular to y = ¼x - 3 and through the point (-1, 6)

9. U-try
Write the equation of the line perpendicular to y = -3x + 4 and through the point (6, 2)

10. HOMEWORK
Worksheet