This document discusses how to write equations for parallel and perpendicular lines. It states that two lines are parallel if they have the same slope, and two lines are perpendicular if their slopes are negative reciprocals of each other. It provides four examples of writing equations for parallel and perpendicular lines.

1. Section 5.5
Write Equations of Parallel and Perpendicular Lines
Write Equations of Parallel and Perpendicular Lines
OBJECTIVE:
I will write equations of parallel and perpendicular lines.

2. Two lines are parallel if their slopes are the same

3. Two lines are perpendicular if their
slopes are negative reciprocals.

4. Example 1

5. Example 1

6. Example 2

7. Example 2

8. Example 3

9. Example 3

10. Example 4

11. Example 4

12. Page 322
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& 32, 33, 35