1. y = mx + b Lesson 8.7 Page 439 Lesson 8.6 Page 398
Slope-Intercept Form
y = mx + b
Learn Formula!

2. y = mx + b
slope
y intercept

3. Weeks ago we learned how to give x a value (0,1,2) and solve for y
We learned how to find the slope by counting up and over
Rise
Run
We also learned to find the solpe using the formula
Y - Y
X - X

4. y = mx + b
slope
y intercept

5. Example 1 Page 398
State the slope and y intercept

6. State the slope and y intercept for the following problems
1. m = y intercept =
2. m = y intercept =
3. m = y intercept =
4. m = y intercept =
5. m = y intercept =
6. m = y intercept =

7. Graph the linear equation
Plot your y intercept
Use Rise
Run
( I will do about 3)
Draw your Linear Line

8. Graph the linear equation
Plot your y intercept
Use Rise
Run
( I will do about 3)
Draw your Linear Line

9. Graph the linear equation
Plot your y intercept
Use Rise
Run
( I will do about 3)
Draw your Linear Line

14. Questions?

15. 441 - 442 Problems 1, 2, 5 - 8, 10 - 13, 18 - 23 Assignment: Page 400
Problems 4, 7, 12, 13, 17, 20 through 23, 31
For each problem you will
State the slope
State the y intercept
Graph the linear Function (linear equation)

16. Page 400
m =
Y intercept =

17. Page 400
m =
Y intercept =

18. Page 400
m =
Y intercept =

19. Page 400
m =
Y intercept =

20. Page 400
m =
Y intercept =

21. y = mx + b 440 Day 2......Example 2 Page 399
Write Equation in slope - Intercept Form
y = mx + b
*****Remember when you move across the =
signs you change the sign**********
****
440
Show your work as you solve the linear functions

22. 5X + y = 3

23. 2x + y = 12

25. 2x + y = -6

26. Questions?

27. Sometimes you will find a number in
front of the y
This has to be changed into only 1y

29. 5x + 4y = 20

30. 3x - 4y = -12

31. -2x + 3y = 12

32. Questions?

33. 440: 2A - 2D 42 and 43 Assignment Page 400 Problems 5 through 9
Write in slope -intercept form
Name the slope and y-intercept
Graph
440: 2A - 2D
Pages
Problems 3,
and
42 and 43

34. Page 400
14)
Page X + y = 5
m =
y-int. =

35. Page 400
14)
Page X + y = 5
m =
y-int. =

36. Page 400
x + y = 0
m =
y-int. =

37. Page 400
x + y = 0
m =
y-int. =

38. Page 400
X + y = -5
m =
y-int. =

39. Page 400
X + y = -5
m =
y-int. =

40. Page 400
y - 6 = 1/2 X
m =
y-int. =

41. Page 400
y - 6 = 1/2 X
m =
y-int. =

42. Page

43. 28)
x - 2y = 8

44. 29) 3x + 4y = 12

45. 30) y = 6

46. 31) x + 4y = 0

47. On the following problems:
Find the Slope and y intercept and Graph
-6x + 2y = -12
5x + 4y = 20
x - 3y = -6
4y + 3x = 12
3y + 2x = 12
2y + 5x = -4

48. Page 400
m =
y-int. =
-6x + 2y = -12

49. Page 400
m =
y-int. =
5x + 4y = 20

50. Page 400
m =
y-int. =
x - 3y = -6

51. m =
y int. =
4y + 3x = 12

52. m =
y int. =
3y + 2x = 12

53. m =
y int. =
2y + 5x = -4