15tjain+Wiki+Assignment+1

TARISHI JAIN Date of Submission: December 4th, 2010 Due Date: December 5th, 2010 Date Assigned: November 11th, 2010 Advanced Math Block 8A Wiki Assignment 1 Topic: p209 #1-4 BOTH SETS, p215 #60-65, p222 #44-55


 * p209 - Graphing a Scatter Plot**

1) Using the STAT EDIT feature to write the data as a set of ordered pairs:



2) Using WINDOW to describe the size of the graph:



3) Setting it to SCATTER PLOT:



4) Graphing the Scatter Plot:



Excercises:

1. In the Scatter Plot I made above, the x-axis represents the age in years, and the y-axis represents the time in minutes. So from the graph, it is easily seen that as the x-value increases, the y-value decreases. Therefore, in order to qualify for the President's Physical Fitness Award, you must decrease your mile time as you get older.

2. Making a Scatter Plot of the data which is of the maximum time allowed for girls in the 1-mile run:



3. As the age of a girl increases, the time decreases. But then after the age of 14, its the time starts to increase.

4. The Scatter Plot of the boys' times, is in regular patter. As they grow older and as age increases, their time decreases, so it is a normal pattern. Whereas, for the girls' times, it starts of the same way but changes towards the end. The times get faster at first but then it changes and ends slow again.


 * p215 # 60-65: Points of Intersection**

60)

61)

62)

63)

64)

65)


 * p222 #44-55: Graphing Lines**

44) y=x+2

Finding the x-intercept: 0=x+2 0=x+2-2 0-2=x
 * -2=x**

Finding the y-intercept: y=0+2
 * y=2**



45) y=x-3

Finding the x-intercept: 0=x-3 0+3=x-3+3
 * 3=x**

Finding the y-intercept: y=0-3
 * y=-3**



46) y=4x+8

Finding the x-intercept: 0=4x+8 0-8=4x+8-8 -8=4x -8/4=4x/4
 * -2=x**

Finding the y-intercept: y=4(0)+8 y=0+8
 * y=8**



47) y=-6+3x

Finding the x-intercept: 0=-6+3x 0+6=-6+3x+6 6=3x 6/3=3x/3
 * 2=x**

Finding the y-intercept: y=-6+3(0) y=-6+0
 * y=-6**



48) y=5x+15

Finding the x-intercept: 0=5x+15 0-15=5x+15-15 -15=5x -15/5=5x/5
 * -3=x**

Finding the y-intercept: y=5(0)+15
 * y=15**



49) 2x+4y=16

Finding the x-intercept: 2x+4(0)=16 2x=16 2x/2=16/2
 * x=8**

Finding the y-intercept: 2(0)+4y=16 4y=16 4y/4=16/4
 * y=4**



50) -4x+3y=24

Finding the x-intercept: -4x+3(0)=24 -4x=24 -4x/4=24/-4
 * x=-6**

Finding the y-intercept: -4(0)+3y=24 3y=24 3y/3=24/3
 * y=8**



51) x-7y=21

Finding the x-intercept: x-7(0)=21 x-0=21
 * x=21**

Finding the y-intercept: 0-7y=21 -7y=21 -7y/-7=21/-7
 * y=-3**



52) 6x-y=36

Finding the x-intercept: 6x-0=36 6x=36 6x/6=36/6
 * x=6**

Finding the y-intercept: 6(0)-y=36 0-y=36
 * y=36**



53) 2x+9y=-36

Finding the x-intercept: 2x+9(0)=-36 2x=-36 2x/2=-36/2
 * x=-18**

Finding the y-intercept: 2(0)+9y=-36 9y=-36 9y/9=-36/9
 * y=-4**



54) 4x+5y=20

Finding the x-intercept: 4x+5(0)=20 4x=20
 * x=5**

Finding the y-intercept: 4(0)+5y=20 5y=20 5y/5=20/5
 * y=4**



55) 0.5y=-2x+8

Finding the x-intercept: 0.5(0)=-2x+8 0=-2x+8 0-8=-2x+8-8 -8=-2x -8/-2=-2x/2
 * 4=x**

Finding the y-intercept: 0.5y=-2(0)=8 0.5y=8 0.5y/0.5=8/0.5
 * y=16**


 * [[image:tarishij12.png]] **