1. Bellwork 10/25
Do page 165 (#23 & 24)
Make your own graph and try to be neat.
Amount
Year

2. Page 171 (1-14 & 17,18) 1.) c = 12 2.) x = 80 3.) y = 36 4.) m = -4
8.) r = 3/10
9.) x = 1.03
10.) y = -7
11.) m= 1.56
12.) x=1.98

3. Page 171 (1-14 & 17,18)
13.) r = c/2
14.) h = S - 2r r
17.) 4.9%

4. Page 171 (1-14 & 17,18)
18.) 45 40 35 30 25 45 50 55 60 65 70 75 80

5. Objective
To be able to recognize Horizontal and Vertical lines on the coordinate plane.

6. Plot the points (3,-3), (3,-2), (3,-1), (3,0),(3,1), (3,2), (3,3)
What do you notice about all the x values that were plotted?
The Equation of the line is x = 3 Y X

7. Now you Plot the points (1,-3), (1,-2), (1,-1), (1,0),(1,1), (1,2), (1,3)
What is the equation of the line?
The Equation of the line is x = 1 Y X

8. What did you notice about all the x values
When the x values are the same, what does the equation begin with?

9. Plot the points (-2,2), (0,2), (3,2)
y = 2 Y X
What is the equation of the line?

10. Now you Plot the points (-2,5), (0,5), (3,5)X
What is the equation of the line?

11. What did you notice about all the y values
When the y values are the same, what does the equation begin with?

12. (4,-2) Graph the lines x = 4 & y = -2
What is the intersection pt. of the 2 lines? Y X

13. Write equations for the horizontal line and the vertical line that pass through the point (-1, 4)
x = -1
y = 4

14. x = -1 & y = 4
y = 4 Y X
x = -1

15. Classwork
Do worksheet 4.1
homework
Study for chapter 3 TEST

18. 31.) x = -2 Y
(-2,4) X
(-2,-3)

19. 32.) x = -1 Y X

20. 33.) y = 2 Y X

21. 34.) y = 4 Y X

22. Bellwork 10/27 Solve: 1.) 12 = x -2 2.) 7x = 42
3.) 9x + 7(x + 1) = x
4.) Solve for x: x - 3y = 2

23. Bellwork 10/27 Solve:
1.) 12 = x -2
2.) 7x = 42
x = 14
x = 6

24. Bellwork 10/27 Solve: 3.) 9x + 7(x + 1) = 17 - 4x
4.) Solve for x: x - 3y = 2
x = 1/2
x = 1/4(2 + 3y)

26. Write equations for the horizontal line and the vertical line that pass through the point (-1, 4) and then plot both lines
x = -1
y = 4

27. The intersection is at (-1,4)
x = -1 & y = 4
y = 4 Y
The intersection is at (-1,4) X
x = -1

28. Write the equations of the line
1.) (3,5), (3,-1), (3,0), (3,-2)
2.) (5,5), (5,-1), (5,0), (5,-2)
3.) (3,5), (-1,5), (0,5), (1,5)
4.) (3,-2), (-1,-2),(0,-2),(1,-2)

29. Write the equations of the line
1.) (3,5), (3,-1), (3,0), (3,-2)
2.) (5,5), (5,-1), (5,0), (5,-2)
x = 3
x = 5

30. Write the equations of the line
3.) (3,5), (-1,5), (0,5), (1,5)
4.) (3,-2), (-1,-2),(0,-2),(1,-2)
y = 5
y = -2

31. Write the Equation of the line
Passes thru the point 4 on the x-axis
x = 4 Y X

32. Write the Equation of the line
Passes thru the point -2 on the x-axis
x = -2 Y X

33. Write the Equation of the line
y = 2 Y X
Passes thru the point 2 on the y-axis

34. Write the Equation of the line
Passes thru the point -5 on the y-axis Y X
y = -5

35. Classwork
Do Worksheet 4.1
Homework
Page 180 (1-30)

36. How could you describe your Relation?
A group of People in the same family:
Example:
aunt, uncle, cousin, brother, sister, parents

37. What is a Relation in Algebra?
A group of ordered Pairs
Example:
{(3,2) , (-1,4) , (-3,-6)}

38. Functions
Relations are functions if the 1st number of the ordered pair is different from all the others.

39. Find the Functions 1.) (1,1) (3,2) (-6,1) 1.) Function
2.) (3,1) (3,2) (-6,1)
2.) Not a Function
3.) (5,1) (-3,-2) (-4,2)
3.) Function

40. Find the Functions 4.) (4,1) (3,2) (-1,1) 4.) Function
5.) (1,1) (-6,2) (-6,1)
5.) Not a Function
6.) (1,3) (3,2) (3,1)
6.) Not a Function

41. Linear Functions
Linear Functions are equations that can be written in the form:
y = mx + b So…..
y = 3x + 2 is a linear function
y = 3x2 + 2 is not a linear function

42. Apply the Vertical line to test for functionsX

43. Apply the Vertical line to test for functionsX

44. Apply the Vertical line to test for functionsX

45. Apply the Vertical line to test for functionsX

46. Apply the Vertical line to test for functionsX