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y-b=-1/2x-2
y=-1/2x-2+b
supaya didapat y=-1/2x+5 maka b=7 (D)
5. y=1/2x-4
m1=1/2
m2=1/2 (sejajar)
Cari persamaan yang mempunyai gradien 1/2 yaitu 2y=x-2 (D)
6. jawabannya B (3,0) dan (5,3)
=
=
=
2y=3x-9
y=3/2x-9/2 --> m=3/2
7. =
=
=
-7(y-7)=-7x
-7y+49=-7x
x-y=-7
y=x+7 (B)
8. y--3=-5(x-2)
y+3=-5x+10
y=-5x+7
2y=-10x+14 (A)
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