1. Do Now 9/27/10 Take out HW from Friday. Be ready to copy POTW #3
- Text p. 45, #12-24 evens, evens
Copy HW in planner.
Text p. 49, #8-28 evens, 32 & 34
Chapter 1 TEST Wednesday!!
Be ready to copy POTW #3

2. Homework Text p. 45, #12-24 evens, 28-40 evens
12) 60
14) -13
16) -350
18) 2
20) -7
22) 340
24) -5(-12)=60
28) a) -49 m b) -48m c) mean
30) 512
32) -2
34) 100
36) <
38) -160
40) -96

3. Objective SWBAT identify and plot points in a coordinate plane
In your notebook, explain how you can decide whether the answer to a multiplication problem with integers is positive or negative. Then solve the problem below.
(-1)(-1)(-1)(-1)(1)(-1)(-1)(-1)(1)(-1)(-1)
Nine negative signs
= -1

4. Section 1.8 “The Coordinate Plane”
y-axis
Quadrant II
(-,+)
Quadrant I
(+,+)
Origin
(0,0)
x-axis
Quadrant III
(-,-)
Quadrant IV
(+,-)

5. Plotting Points (5,2) y-axis x-axis ordered pair y – coordinate4
x – coordinate 3 2 1
x-axis 1 2 3 4 5 6

6. Plotting Points (2,4) (-3,4) (2,-3) (-6,-4) y-axis x-axis ordered pair5 C 4 A 3
(2,-3) 2 1 -6 -5 -4 -3 -2 -1 1 2 3 4 5 6
x-axis -1
(-6,-4) -2 -3 B D -4 -5

7. Plotting Points (4,3) (-4,3) (4,-2) (-4,-2) y-axis x-axis
Plot the points A (4,3), B (4,-2), C (-4,-2), and D (-4,3).
Then find the area and perimeter of the figure.
y-axis
(4,3) 5
(-4,3) 4 D 3 A 2 1 -6 -5 -4 -3 -2 -1 1 2 3 4 5 6
x-axis -1
(4,-2)
(-4,-2) -2 B C -3 -4
Perimeter =
= 26 units
Area = 5 x 8
= 40 sq. units -5

8. Scatter Plot- Line of Fit- the graph of a set of ordered pairs
Enrollment at Howell Middle School South
760
Line of Fit-
a line that can be used to estimate data on a scatter plot
750
740
730
enrollment
720
Use a line of fit to estimate the enrollment in the 2009.
710
700
690
The enrollment in 2009 will be approximately 730 students
680 00 01 02 03 04 05 06 07 08 09
year

9. Graphing Activity
Plot the points according to the directions. Then connect the dots. What mystery figure have you created?

10. NJASK7 Prep
Homework
Text p. 49, #8-28 evens, 32 & 34