# Section 4.4: Equations of Parallel and Perpendicular Lines

**Textbook Section 4.4: Equations of Parallel and Perpendicular Lines**

Textbook Section 4.4: Equations of Parallel and Perpendicular Lines

**Learning Objectives**

• Determine whether lines are parallel or perpendicular.

• Write equations of perpendicular lines.

• Write equations of parallel lines.

• Investigate families of lines.

**Section 4.4 Videos**

**Video Lessons**

**Video Examples**

- Ex 1: Find the Equation of a Line Parallel to a Given Line Passing Through a Given Point
- Ex 2: Find the Equation of a Line Parallel to a Given Line Passing Through a Given Point
- Ex 1: Find the Equation of a Line Perpendicular to a Given Line Passing Through a Given Point
- Ex 2: Find the Equation of a Line Perpendicular to a Given Line Passing Through a Given Point

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