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= 4/6= 2/3--> itu soal di buku latihan un kan?
15. x-2y=4 --> gradiennya= 1/2
persamaan garis di dapat gradiennya kebalikan dri 1/2 = -2
y - ya = m (x-xa)
y+2= -2(x-5)
y= -2x+10-2
y=8-2x