1. Tuesday, March 15  Practice 6-5 is due today (Please make sure your name is on it)  Today’s Agenda (Fill in planner) Open Note Quiz Grade Practice 6-5 Note Taking (Lesson 6- 6: Parallel and Perpendicular Lines) Assign Practice 6-6 (due Thursday)  Bell Work

3. Today’s Objectives  By the end of class today, SWBAT Determine whether lines are parallel or perpendicular by their slopes. Write an equation for perpendicular and parallel lines.

4. Vocabulary lines in the same plane that never intersect lines in the same plane that intersect to form right angles.

5. Vocabulary and Key Concepts they have the same slope.

6. Example

7. Quick Check

8. Example

9. Quick Check All we know is the slope and a point, so use point-slope form to find the y- intercept. Substitute (1,8) and -4/3 into point-slope form of linear equation. Simplify Add 8 to both sides to isolate the y. Simplify

10. Quick Check (The slope of the sidewalk)