Sept. 28 - Slope-Intercept Form

1. Slope-Intercept Form

2. good neighbor day! 9.28.22 Pick up the warm-up. Complete. Warm-up Scenario Examples Stations Desmos Would you rather find a hair in your food or a spider in your bed? Chromebook, Notebook, Pencil, Calculator

3. Warm-up Forms of Lines

4. Warm-up Forms of Lines slope-intercept slope = 1/4 y-intercept is (0, 6)

5. Warm-up Forms of Lines slope-intercept slope = 1/4 y-intercept is (0, 6) point-slope slope = 4 point is (-2, 3)

6. Warm-up Forms of Lines slope-intercept slope = 1/4 y-intercept is (0, 6) point-slope slope = 4 point is (-2, 3) standard x-int is (4, 0) y-int is (0, 3)

7. Warm-up Forms of Lines slope-intercept slope = 1/4 y-intercept is (0, 6) point-slope slope = 4 point is (-2, 3) standard x-int is (4, 0) y-int is (0, 3) point-slope slope = 1/2 point is (3, -6)

8. Warm-up Forms of Lines slope-intercept slope = 1/4 y-intercept is (0, 6) point-slope slope = 4 point is (-2, 3) standard x-int is (4, 0) y-int is (0, 3) point-slope slope = 1/2 point is (3, -6) standard x-int is (4, 0) y-int is (0, 4)

9. Warm-up Forms of Lines slope-intercept slope = 1/4 y-intercept is (0, 6) point-slope slope = 4 point is (-2, 3) standard x-int is (4, 0) y-int is (0, 3) point-slope slope = 1/2 point is (3, -6) standard x-int is (4, 0) y-int is (0, 4) slope = 3 y-int is (0, 2) slope-intercept

10. Remember… Slope-Intercept Form y = mx + b

11. -1/2 slope (0, 3) y-intercept

12. $10

13. $10 (0, 120)

14. $10 (0, 120) Marsha had $120 in her account at the start.

15. $10 (0, 120) Marsha had $120 in her account at the start. 10

16. $10 (0, 120) Marsha had $120 in her account at the start. 10 She saves $10 per week.

17. $10 (0, 120) Marsha had $120 in her account at the start. 10 She saves $10 per week. y=10x+120

18. $10 (0, 120) Marsha had $120 in her account at the start. 10 She saves $10 per week. She starts with $120 and saves $10 per week. y=10x+120

21. time (in hours)

22. time (in hours) distance from home

23. time (in hours) distance from home -60 distance from home isdecreasing by 60 miles every hour.

24. time (in hours) distance from home -60 distance from home is decreasing by 60 miles every hour. (0,300) distance from home time 300 miles

25. time (in hours) distance from home -60 distance from home is decreasing by 60 miles every hour. distance from home time 300 miles y = -60x + 300

28. number of hours worked

29. number of hours worked total earnings (in dollars)

30. number of hours worked total earnings (in dollars) The slope is 15. It means that Bavia earns $15 per hour.

31. number of hours worked total earnings (in dollars) The slope is 15. It means that Bavia earns $15 per hour. The y-intercept is 20. It means that Bavia started with $20.

32. number of hours worked total earnings (in dollars) The slope is 15. It means that Bavia earns $15 per hour. The y-intercept is 20. It means that Bavia started with $20. y = 15x + 20

39. Answers 2 (0, 5) y = 2x + 5 Gerald earned $2 per hour for babysitting. Gerald started with $5.

40. Answers -3 (0, 12) y = -3x + 12 Kim writes 3 pages per day. The number of pages she has left to write decreases by 3 each day. At the beginning, Kim had 12 pages to write.

41. Answers 20 (0, 0) y = 20x It costs $20 per ticket. When zero tickets are sold, there are zero dollars earned.

42. Answers 8 (0, 20) y = 8x + 20 Mason earns $8 per hour. Mason started with $20.

43. Extra Practice with Graphing from Slope-Intercept Form Teachers click here for the activity.