15szhang+Wiki+Assignment+1

Stanley Zhang Date of Submission: Due Date: December 3rd, 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 - Making Scatter Plots 1) The required time decreases as age increases. 2) 3) The required times get lower as age increases until around 14 years old, where it goes up again to 16 years, and goes down again. 4) It does not follow a pattern that stays the same for the entire duration of the graph. = = =__p215 - Finding Intersections__= Be sure to annotate screenshots 60)

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=__**p222 - #44-55**__=

44) y=x+2

X intercept 0=x+2 0-2=x __**-2=x**__ (-2,0)

Y intercept y=0+2 __**y=2**__ (0,2)



45) y=x-3

X intercept 0=x-3 0+3=x __**3=x**__ (3,0)

Y intercept y=0-3 __**y=-3**__ (0,-3)



46) y=4x+8

X intercept 0=4x+8 0-8=4x -8=4x -8÷4=x __**-2=x**__ (-2,0)

Y intercept y=4(0)+8 y=0+8 __**y=8**__ (0,8)



47) y=-6+3x

X intercept 0=-6+3x 0+6=3x 6=3x 6÷3=x __**2=x**__ (2,0)

Y intercept y=-6+3(0) y=-6+0 __**y=-6**__ (0,-6)



48) y=5x+15

X Intercept 0=5x+15 0-15=5x -15=5x -15÷5=x __**-3=x**__ (-3,0)

Y Intercept y=5(0)+15 y=0+15 __**y=15**__ (0,15)



49) 2x+4y=16

X Intercept 2x+4(0)=16 2x+0=16 2x=16 x=16÷2 (8,0)
 * __x=8__**

Y Intercept 2(0)+4y=16 0+4y=16 4y=16 y=16÷4 (0,4)
 * __y=4__**



50) -4x+3y=24

X Intercept -4x+3(0)=24 -4x+0=24 -4x=24 x=24÷-4 __**x=-6**__ (-6,0)

Y Intercept -4(0)+3y=24 0+3y=24 3y=24 y=24÷3 (0,8)
 * __y=8__**



51) x-7y=21 X Intercept x-7(0)=21 x-0=21 __**x=21**__ (21,0)

Y Intercept 0-7y=21 -7y=21 y=21÷-7 __**y=-3**__ (0,-3)



52) 6x-y=36

X Intercept 6x-0=36 6x=36 x=36÷6 (6,0)
 * __x=6__**

Y Intercept 6(0)-y=36 0-y=36 (0,36)
 * __y=36__**



53) 2x+9y=-36

X Intercept 2x+9(0)=-36 2x+0=-36 2x=-36 x=-36÷2 (-18,0)
 * __x=-18__**

Y Intercept 2(0)+9y=-36 0+9y=-36 9y=-36 y=-36÷9 __**y=-4**__ (0,-4)



54) 4x+5y=20 X Intercept 4x+5(0)=20 4x+0=20 4x=20 x=20÷4 __**x=5**__ (5,0)

Y Intercept 4(0)+5y=20 0+5y=20 5y=20 y=20÷5 __**y=4**__ (0,4)



55) 0.5y=2x+8

X Intercept 0.5(0)=2x+8 0=2x+8 0-8=2x -8=2x -8÷2=x (-4,0)
 * __-4=x__**

Y Intercept 0.5y=2(0)+8 0.5y=0+8 0.5y=8 y=8÷0.5 __**y=16**__ (0,16)