If the pair of equations a1 x + b1y + c1= 0 and a2 x + b2 y + c2 = 0 has unique solution, then ………………
If the pair of equations a1 x + b1y + c1= 0 and a2 x + b2 y + c2 = 0 has unique solution, then ………………
A) a1/a2 = b1/b2
B) a1/a2 ≠ b1/b2
C) b1/b2 ≠ c1/c2
D) b1/b2 = c1/c2
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