1. Warm Up Use the figure below to answer each question. 1 2 3 4 5 6 7 8
< 3 and < 6 are ____________________ angles.
< 1 and < 8 are ____________________ angles.
< 2 and < 6 are ____________________ angles.
< 3 and < 5 are ____________________ angles.
< 4 and < 8 are ____________________ angles.

2. Section 3.4 Find and Use Slopes of Lines
Objective:
SWBAT find and compare slopes of lines.

3. Slope of a line Negative slope: Line falls left to right
Positive slope: Line rises left to right
Zero slope: Horizontal Line
Undefined slope: Vertical Lines

4. Slopes of Parallel Lines
Parallel lines have same slope

5. Slopes of Perpendicular Lines
Perpendicular lines have slopes that are negative reciprocals of each other. The product of their slopes is -1.

6. Graph the lines and tell whether the lines are parallel, perpendicular, or neither.
Line 1: (-9, 3), (-7, 7), Line 2: (-10, 6), (-6, 4)
Step 1: Find the slope of each line
Step 2: Determine if the lines are parallel, perpendicular, or neither.
Step 3: Graph the lines.

7. Graph

8. Graph the lines and tell whether the lines are parallel, perpendicular, or neither.
Line 1: (0, 2), (6, 5), Line 2: (2, 4), (4, 0)

9. Graph the line through the given point with the given slope.

10. Graph the line through the given point with the given slope.

11. Graph the line through the given point with the given slope.

12. Study Guide Worksheet Exercises 1-5
Homework
Study Guide Worksheet Exercises 1-5