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Persamaan garis melalui titik (2, -1):
y - y1 = m . (x - x1)
y - (-1) = -3/2 . (x - 2)
y + 1 = -3/2x + 3 (kali 2 kedua ruas)
2y + 2 = -3x + 6
2y = -3x + 6 - 2
2y = -3x + 4
3x + 2y - 4 = 0
Persamaan garis yang melalui titik (2,-1) adalah :
y - y1 = m (x-x1)
y+1 = -3/2 (x-2)
y+1 = -3x/2 +3
y = -3x/2 + 2
----------------- × 2
2y = -3x + 4
3x + 2y - 4 = 0