AM+Wiki+Assignment+1

MMS Date of Submission: 24/11/10 Due Date: 05/12/10 Date Assigned: 11/11/10 Math 8A

Page 209: Graphing a Scatter Plot

AM Wiki Assignment 1

 * 1. The data of the Boys' Physical Fitness Award (in ordered pairs). **


 * 2. Use Window to describe the size of the graph. The x-values are between 0 and 20. The y-values are between 0 and 10. **



**3. Use STAT PLOT. Select scatter plot, List 1 for X values, List 2 for Y values.**

Not possible on computer.

**4. Graph your results.**



Excercises

**1. Describe any patterns you see in the scatter plot you made in the example above.**

As age increases, the amount of time given for the presidential award decreases.


 * 2. Make a scatter plot of the Girls' Presidential Physical Fitness Award data.**




 * 3. Describe any patterns you see in the scatter plot.**

It goes in a zig zag sort of pattern. The pattern does not go in a straight line. Until 14 yrs old, the graph progresses downward, but then at 15 yrs old the timing goes up (opposed to down).


 * Page 215 #60-65**


 * 60.**
 * x=-5, y=2**


 * 61.**
 * y=11, x=-8**


 * 62.**
 * y=-6, x=1**


 * 63.**
 * x=4, y=-4**


 * 64.**
 * y=-1, x=0**


 * 65.**
 * x=3, y=0**


 * Page 222 #44-55**

y=x+2 y=0+2 y=2 y-int. (0,2)
 * 44.**

y=x+2 0=x+2 x=2 x-int. (-2,0)

y=x-3 y=0-3 y=-3 y int. (0,-3)
 * 45.**

y=x-3 0=x-3 x=3 x int. (3,0)

y=4x+8 y=(4*0)+8 y=8 y int. (0,8) x=-2
 * 46.**

y=4x+8 0=4x+8 -8=4x x int. (-2,0)

y=-6+3x y=-6+(3*0) y=6 y int. (0,6)
 * 47.**

y=-6+3x 0=-6+3x 6=3x x=2 x int. (2,0)

y=5x+15 y=(5*0)+15 y=15 y int. (0,15)
 * 48.**

y=5x+15 0=5x+15 -15=5x x=-3 x int. (-3,0)

2x+4y=16 (2*0)+4y=16 4y=16 y=4 y int. (0,4)
 * 49.**

2x+4y=16 2x+(4*0)=16 2x=16 x=8 x int. (8,0)

-4x+3y=24 (-4*0)+3y=24 3y=24 y=8 y int. (0,8)
 * 50.**

-4x+3y=24 -4x+(3*0)=24 -4x=24 x=-6 x int. (-6,0)

x-7y=21 0-7y=21 -7y=21 y=-3 y int. (0,-3)
 * 51.**

x-7y=21 x-(7*0)=21 x=21

6x-y=36 (6*0)-y=36 -y=36 y=-36 y int. (0,-36)
 * 52.**

6x-y=36 6x-0=36 6x=36 x=6 x int. (6,0)

2x+9y=-36 (2*0)+9y=-36 9y=-36 y=-4 y int. (0,-4)
 * 53.**

2x+9y=-36 2x+(9*0)=-36 2x=-36 x=18 x int. (18,0)

4x+5y=20 (4*0)+5y=20 5y=20 y=4 y int. (0,4)
 * 54.**

4x+5y=20 4x+(5*0)=20 4x=20 x=4 x int. (4,0)

0.5y=-2x+8 0.5y=(-2*0)+8 0.5y=8 y=16 y int. (0,16)
 * 55.**

0.5y=-2x+8 (0.5*0)=-2x+8 0=-2x+8 -8=-2x x=4 x int. (4,0)