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Kelas 8 MatematikaBab Persamaan Garis
ax + by + c = 0, tegak lurus, (p, q)
bx - ay - (bp - aq) = 0
3x + 4y - 5 = 0, tegak lurus, (-1, 2)
4x - 3y - (4 . (-1) - 3 . 2) = 0
4x - 3y - (-4 - 6) = 0
4x - 3y + 10 = 0