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m1=-8/-6
=4/3
m1=m2
4/3=m2
pers.garis=
y-y1=m(x-x1)
y-1=4/3(x+2)
y-1=4/3x +8/3
y= 4/3x+11/3
3y=4x+11
3y-4x-11=0
semoga benar :)