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MTH 208 week 3 individual

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Week 3
3.1)
#8
Y = 2x+5 (8,y ) (-1,y ) (x ,-1)
Y=2(8) + 5
Y= 16+5
Y = 21
Y=2(-1)+5
Y=-2+5
Y=3
-1=2x+5
-1-5=2x+5-5
-6=2x
-6/2=2x/2
-3=x
(8,21)(-1,3)(-3,-1)
#18
Y=-x+4 y=0+4 y=-2+4
Y=2+y y=4 y=2
Y=6
0=-x+4 -2=-x+4

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-4/-1 = -x/-1 2=-x
4=x 2/-1=-x/-1
-2=x
70) x-2y=6
0-2y=6
-2y=6
-2y/-2=6/-2
Y=-3
(0,-3)
2-2y=6
2-2-2y=6-2
-2y=4
-2y/-2=4/-2
Y=2
(2,-2)
4-2y=6
-2y=2
Y=-1
(4,-1)
6-2y=6
-2y=0
Y=0

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