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Coordinate Geometryhard
0:00.0

Determine the value of kkk such that the lines x+2y−1=0x+2y-1=0x+2y−1=0, x−y+2=0x-y+2=0x−y+2=0, and kx−2y+3=0kx-2y+3=0kx−2y+3=0 form a triangle with zero area.