1. Bell Quiz

2. Objectives Find the slope of a line using the slope formula.

3. Slope Formula Any two ordered pairs on a line can be used to determine the slope of the line. The slope is a measure of the steepness of a line. The slope m of a line containing points and is

4. Example 1 Determining Slope from Two Points Determine the slope of the line that contains the given points (2, 4) and (6, 6)

5. Example 2 Determining Slope from Two Points Determine the slope of the line that contains the given points (– 4, 4) and (4, – 2)

6. Lesson Practice Determine the slope of the line that contains the given points (– 3, – 4) and (3, 0)

7. Lesson Practice Determine the slope of the line that contains the given points (– 5, 8) and (5, 6)

8. Example 3 Determining Slope from Two Points Determine the slope of the line that contains the given points (0, – 5) and (5, 10)

9. Lesson Practice Determine the slope of the line that contains the given points (– 6, 5) and (3, – 13)

10. Lesson Practice Determine the slope of the line that contains the given points (0, 6) and (1, 12)

11. Lesson Practice Determine the slope of the line that contains the given points (– 2, 7) and (2, – 9)

12. Slope Formula Two points are not always given explicitly as coordinates to determine the slope. If given a table or graph then two points must be chosen in order to use the slope formula.

13. Example 4 Determining Slope From a Table Determine the slope of the line that contains the given points shown in the table.

14. Lesson Practice Determine the slope of the line that contains the given points shown in the table.

15. Example 5 Determining Slope from a Graph Determine the slope of the line.

16. Lesson Practice Determine the slope of the line.

17. Example 6 Determining Slope from a Graph Determine the slope of the line.

18. Lesson Practice Determine the slope of the line.

19. Example 7 Determining Slopes of Horizontal and Vertical Lines Determine the slopes of the horizontal and vertical lines given.

20. Lesson Practice Determine the slope of the line.

21. Lesson Practice Determine the slope of the line.