1. Chapter 12- 2

3. The rise of a line is the difference in y-values (up (+) /down (-)) The run of a line is the difference in x-values (right (+), left (-))

4. The slope of a line is the ratio of rise to run for any two points on a line Slope = __rise___ run

5. Begin at one point and count vertically to find the rise. Then count horizontally to the second point to find the run. Slope = __rise___ run

6. Begin at one point and count vertically to find the rise. Then count horizontally to the second point to find the run. Slope = __rise___ run

7. Begin at one point and count vertically to find the rise. Then count horizontally to the second point to find the run. Slope = __rise___ run

8. Find the slope of the line that passes through (1, 7) and (9, 1). Slope (m) = y2 - y1 =___________ x2 - x1 *Let (x1, y1) be (1,7) and (x2, y2) be (9, 1)

9. Find the slope of the line that passes through (-2, -2) and (-4, 1). Slope (m) = y2 - y= ____________ x2 - x1

10. Find the slope of the line that passes through (3, -6) and (2, -1). Slope (m) = y2 - y= ____________ x2 - x1

12. HW for Tuesday: Page 640 -641 (#9-21, 24, 25, 28)