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m2= 2 (berpotongan)
mk = -1/2 (karena sejajar)
y/x = m2
y/x = 2
y/4= 2
y = 8
= -8
Persamaan garis k
y-y1 = m(x-x1)
y+8 = -1/2x
y+1/2x+8 = 0
2y + x + 16 = 0
Jawaban D
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