EjacobyAM8+Wiki+Assignment+1

EMMA JACOBY Date of Submission: December 5th, 2010 Due Date: December 3rd, 2010 Date Assigned: November 11th, 2010 Advanced Math Block A Wiki Assignment 1 Topic: p209 #1-4 BOTH SETS, p215 #60-65, p222 #44-55

p209 - 1-4 BOTH SETS

__**Graphing a Scatter Plot**__

1. Using the STAT FEATURE to write the data in ordered pairs: 2. Using WINDOW SETTINGS to describe the size of the graph:



3. Setting the plot type SCATTER PLOT:

4. Graphing the scatter plot:

Exercises:

1. In the data section of the scatter plot, there is a pattern. As the x-value increases the y-value decreases. Since the x-axis represents age and the y-axis represents mile time it means that as the age of the boys running the mile increases, their mile time decreases.

2. Below is the graph of the maximum time allowed for girls in the Presidential Physical fitness award.

3. The pattern in the scatter plot is that as the age of the girls increases their maximum mile time decreases up until the age of 14. After that the mile time increases.

4. The boy's and girl's mile times are different because the boy's mile time decreases as age increases but the girl's mile time decreases as age increases only until the age of 14, and after that the mile time increases.

p.215 #60-65 Points of Intersection (the coordinate pair in the graphs of 60-65 are the point of intersection)

60.



61.



62.



63.



64.



65.



p. 222 #44-55 Graphing lines

44. y-intercept: y=x+2 y=0+2 y=2 (2,0)

x-intercept: y=x+2 0=x+2 -2=x (-2,0)



45. y-intercept: y=x-3 y=0-3 y=-3 (0,-3)

x-intercept: y=x-3 0=x-3 -3=x (-3,0)

46. y-intercept: y=4x+8 y=4(0)+8 y=8 (0,8)

x-intercept: y=4x+8 0=4x+8 -8=4x x=-2 (-2,0)



47. y-intercept: y=-6+3x y=-6+3(0) y=-6+0 y=-6 (0,-6)

x-intercept: y=-6+3x 0=-6+3x 6=3x x=2 (2,0)



48. y-intercept: y=5x+15 y=5(0)+15 y=15 (0,15)

x-intercept: y=5x+15 0=5x+15 -15=5x x=-3 (-3,0)



49. y-intercept: 2x+4y=16 2(0)+4y=16 4y=16 y=4 (0,4)

x-intercept: 2x+4y=16 2x+4(0)=16 2x=16 x=8 (8,0)



50. y-intercept: -4x+3y=24 -4(0)+3y=24 3y=24 y=8 (0,8)

x-intercept: -4x+3y=24 -4x+3(0)=24 -4x=24 x=-6 (-6,0)



51. y-intercept: x-7y=21 0-7y=21 -7y=21 y=-3 (0,-3)

x-intercept: x-7y=21 x-7(0)=21 x=21 (21,0)



52. y-intercept: 6x-y=36 6(0)-y=36 -y=36 y=-36 (0,-36)

x-intercept: 6x-y=36 6x-0=36 6x=36 x=6 (6,0)



53. y-intercept: 2x+9y=-36 2(0)+9y=-36 9y=-36 y=-4 (0,-4)

x-intercept: 2x+9y=-36 2x+9(0)=-36 2x=-36 x=-18 (-18,0)



54. y-intercept: 4x+5y=20 4(0)+5y=20 5y=20 y=4 (0,4)

x-intercept: 4x+5y=20 4x=5(0) 4x=20 x=5 (5,0)



55. y-intercept: 0.5y=-2x+8 0.5y=-2(0)+8 0.5y=8 y=16 (0,16)

x-intercept: 0.5y=-2x+8 0.5(0)=-2x+8 0=-2x+8 -8=-2x x=4 (4,0)