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Verified answer
Kelas 8 MatematikaBab Persamaan Garis
ax + by + c = 0, tegak lurus, (p, q)
bx - ay - (bp - aq) = 0
3x - 4y + 5 = 0, tegak lurus, (2, -1)
-4x - 3y - (-4 . 2 - 3 . (-1)) = 0
-4x - 3y - (-8 + 3) = 0
-4x - 3y + 5 = 0
4x + 3y - 5 = 0