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= -2/-3
= 2/3
m¹=m²
y-y1=m(x-x1)
y-3=2/3(x-2)
y-3=2/3x - 4/3
semua dikali 3 soalnya pecahannya penyebutnya sama
3y-9=2x-4
-9+4=2x-3y
-5=2x-3y (d)