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1A.(-2,3),m=1
y-y1=m(x-x1)
y-3=1(x-(-2))
y-3=x+2
y=x+2-3
y=x-1 atau y-x+1=0 atau y-x=-1
B.(-4,0),m=2/3
y-y1=m(x-x1)
y-0=2/3(x-(-4))
y=2/3x+8/3(semua dikali 3)
3y=2x+8 atau 3y-2x-8=0 atau 3y-2x=8
2.(2,5),m=2
y-y1=1/m(x-x1)
y-5=1/2(x-2)
y-5=1/2x-1
y=1/2x-1+5
y=1/2x+4(semua dikali 2)
2y=x+8 atau 2y-x-8=0 atau 2y-x=8