2. Name: Date: Period: Topic: Rate of Change & Slope Essential Question: What does the slope of the line indicate about line? Warm-Up: (Brain teaser) What is the difference between the two line of variables?

3. Home-Learning Review: Random\HLA1-2nd Grading Period.doc

4. Rate of Change Define: Time (x)Distance (y) 1 hour70 miles 2 hours140 miles 3 hours210 miles 4 hours280 miles 5 hours350 miles

5. Time (x)Revenue(y) January$20,000 February25, 000 March30, 000 April35, 000 Calculate the rate of change for the Math Beach High Company How do you obtain the rate change for this table of values? How do you obtain the rate of change for the previous table of values? Are there any similarities?

6. Imagine yourself...

7. What is the meaning of this sign? A) icy road ahead B) steep road ahead C) curvy road ahead D) trucks entering highway ahead

8. Slope is the steepness of a line. (vertical change over horizontal change). It can also be defined as rise over run Y 2 – Y 1 X 2 – X 1 m =

9. Example Given the ordered pairs (-2, -2) and (4, 1), find the slope of the line that passes through these points.

10. Determine the slope of the line. rise/run = 3/6 = 1/2 6 3 Graph the points (-2, -2) and (4, 1) and apply “rise over run”.

11. (5, 4) and (1, 1) Positive Slope

12. Negative Slope (1, -1) and (5, -4)

13. Find the slope of the following points: (0, -1) and (-2, -1) Horizontal or Zero Slope

14. (-2, -3) and (-2, 3) Vertical or Undefined Slope

15. Find the slope by counting units and by using the slope formula:

16. Independent Practice: Page 295 (2 – 7 Skip # 5)

17. How would you determine the slope by the Book? Hand-out

18. 36. 37. EOC Practice

19. 38. 39. EOC Practice

20. Wrap-Up: Summary Assigned HLA#2 Page 296-298 (12, 14, 16, 18, 20, 24, 43, 44, 59, 66) Vocabulary Review