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y - 5/ -4 - 5 = x - (-3)/ 1- (-3)
y - 5 / -9 = x + 3 / 4
4 ( y - 5 ) = -9 ( x+3)
4y - 20 = -9x -27
4y = -9x -27 + 20
4y = -9x -7 atau y = -9/4x -7/4
y-5 (1-(-3)) = x-(-3) (-4-5)
y-5 (4) = x+3 (-9)
4y-20 = -9x -27
4y = -9x -27 +20
4y = -9x -7
4y + 9x + 7 = 0
maaf kalau salah!