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-3y=-2x+4
y=2/3x-4/3
m=2/3
syarat suatu garis tegak lurus yaitu m1 . m2 = -1
m1 . m2 = -1
2/3 . m2 = -1
m2 = -3/2
A.y-y1 =m(x-x1)
y-5=-3/2(x+3)
y-5=-3/2x-9/2
y=-3/2x+45/2
B.y-y1 =m(x-x1)
y-3=-3/2(x-1)
y-3=-3/2x+3/2
y=9/2x-9/2