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Verified answer
Kelas 8 MatematikaBab Persamaan Garis
ax + by + c = 0, tegak lurus, (p, q)
bx - ay - (bp - aq) = 0
4x - 3y + 8 = 0, tegak lurus, (2, -7)
-3x - 4y - ((-3) . 2 - 4 . (-7)) = 0
-3x - 4y - (-6 + 28) = 0
-3x - 4y - 22 = 0
3x + 4y = -22