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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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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 -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 (6,0) 8-2y+6 -2y=-2 Y=1 (8,1) 3.2) #8 (0,3) (2,-1) m=y2-y1/ x2-x1 m=-1-3/2-0 m=-4/2 #10 (0,0)(2,4) m=y2-y1/x2-x1 m=4-0/2-0 m=4/2 #42 #52 (-4,0) (0,6) M=6-0/0+4 M=6/4 0=+6/4(0)+b y=6/4x 3.3) #8 (0,3)(2,-1) M=-1-3/2-0 M=-4/2 3=-4/2(0)+b 3=(0)+b 3=b Y=-4/2x+3 #10 (0,-1)(4,1) M=1+1/4-0 M=2/4 -1=2/4(0)+b -1=b Y=2/4x-1 #32 X+2y=3 2y=x+3 2y=1x=3 Y=1/2x+3 M=1/2, b=3 #66 Y+4x=8 Y=4x+8 Y=4/1x+8 M=4/1, b =(0,8) #72 Parrellel. 3.4) #10 Y+3=-3(x-6) Y=3=-3x+18 Y=-3x+15 Y=-3/1x+5 #24 (-1,-5), -8 -5=m(-1)-8 3=-1m 3/-1=-1m/-1 -3=m Y=-3/1x-8 #56 -3x+2y=9 2y=3x+9 Y=3/2x+9 #62 Y=mx+b ???? Did not grasp this one. Sorry. 3.5) #6 Y=kp #8 U=k/n #18 C=k/d 5=k/2 5*2=k/2*2 10=k C=10/d #26 N=xq 39=3x 39/3=3x/3 13=x N=13q ...
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