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Verified answer
Bab Persamaan GarisMatematika SMP Kelas VIII
ax + by + c = 0, tegak lurus, (p, q)
bx - ay - (bp - aq) = 0
5x - 6y + 2 = 0, tegak lurus, (4, -3)
-6x - 5y - (-6 . 4 - 5 . (-3)) = 0
-6x - 5y - (-24 + 15) = 0
-6x - 5y - (-9) = 0
-6x - 5y + 9 = 0
6x + 5y = 9