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Verified answer
Bab Persamaan GarisMatematika SMP Kelas VIII
m = -1/4
(y2 - y1) / (x2 - x1) = -1/4
4 . (7 - H) = -1 . (H + 3 - 4)
28 - 4 H = - H + 1
-4H + H = 1 - 28
-3H = -27
H = -27/-3
H = 9