A pair of lines ax1+by1+c1=0 & ax2+by2+c=0 are interesting lines then the ratio of their co-efficients is ________
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ax + by + c = 0 and a'x + b'y + c' = 0 , then ; The lines are intersecting if a/a' ≠ b/b' . → In this case , unique solution is found . The lines are coincident if a/a' = b/b' = c/c' .
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