15carevalo+Wiki+Assignment+1

Christy Arevalo Date of Submission:December 5,2010 Due Date: December 5, 2010 Date Assigned: November 11,2010 Math Block 8A Wiki Assignment 1 Topic:p. 209: both sets, p. 215:60-65,p.222: 44-55

__** Presidential Fitness Award Mile Times(Example): **__ Scatter Plot and Data: __**Exercise 1:**__ 1. //Look for a pattern: Describe any patterns you see in the scatter plot you made in the example above.// A pattern I noticed was that as the ages increased, the time in minutes decreased. The kids had less time to run, the older they got. 2. Girls' Presidential Fitness Award Mile Times Scatter Plot: 3. //Look for a pattern: Describe any patterns you see in the scatter plot//. The plot decreases for a while, but then it increases a little bit. It later starts to decrease again. 4. //How does this scatter plot differ form the scatter plot for the boys' times?// This scatter plot is different in that while the boys' decreased steadily, the girls' plot decreased, but then increased again. 60. (-5,2) 61. (-8,11) 62. (1,-6) 63.(4,-4) 64.(0,-1) 65.(3,0) __** P. 215 **** 44-55 **__
 * __ P.215 60-65 __**

44. y=0+2 y=2 (0,2)

0=x+2 -2 -2 -2=x (-2,0) 45. y=0-3 y=-3 (0,-3)

0=x-3 +3 +3 3=x (3,0) 46. y=4(0)+8 y=8 (0,8)

0=4x+8 -8 -8 -8=4x divide by 4 -2=x (-2,0) 47. y= -6+3(0) y=-6 (0,-6)

0=-6+3x +6 +6 6=3x divide by 3 2=x (2,0) 48. y=5(0)+15 y=15 (0,15)

0=5x+15 -15 -15 -15=5x divide by 5 -3=x (-3,0) 49. 2x+4y=16 -4y -4y 2x=-4y+16 -16 -16 2x-16=4y divide by 4 1/2x-4=y

1/2(0)-4=y y=-4 (0,-4)

1/2x-4=0 +4 +4 1/2x= 4 x2 x2 x=8 (8,0) 50. -4x+3y=24 +4x +4x 3y=4x+24 Divide by 3 y=1 1/3x +8

0=1 1/3x +8 -8 -8 -8=1 1/3 x divide by 1 1/3 -6=x (-6,0)

y=1 1/3(0)+8 y=8 (0,8) 51. x-7y=21 -x -x -7y=21-x Divide by -7 Y= -1/7x -3

0=-1/7x-3 +3 +3 3= -1/7x x-7 x=-21 (-21,0)

y=-1/7(0)-3 y=-3 (0,-3) 52. 6x-y=36 +y +y 6x=y+36 -36 -36 6x-36=y y=6(0)-36

y=6(0)-36 y=-36 (0,-36)

0=6x-36 +36 +36 36=6x Divide by 6 6=x (6,0) 53. 2x+9y=-36 -9y -9y 2x=-9y-36 +36 +36 2x+36=-9y Divide by -9 -0.22x-4=y

-0.22(0)-4=Y -4=y (0,-4)

-0.22x-4=0 +4 +4 -0.22x=4 Divide by -0.22 x=18.18 (18.18,0) 54. 4x+5y=20 -5y -5y 4x=-5y+20 -20 -20 4x-20=-5y Divide by -5 -4/5x +4=y

-4/5(0)+4=y y=4 (0,4)

-4/5x+4=0 -4 -4 -4/5x=-4 Divide by -4/5 x=5 (5,0) 55. 0.5y=-2x+8 Divide by 0.5 y= -4x+16

0=-4x+16 -16 -16 -16=-4x Divide by -4 4=x (4,0)

Y=-4(0)+16 Y=16 (0,16)