If a1a2=b1b2=c1c2 for the system of equations a1x+b1y+c1=0 and a2x+b2y+c2=0
These represent coincident lines
The system of equations have infinite solutions
Both A and B.
none of these
If a1a2=b1b2=c1c2, the system of equations are consistent , coincident lines and have infinite solutions.
Unique point is obtained for the pair of equations a1x + b1y + c1 = 0 and a2x +b2y + c2 = 0 if __________ .
Parallel lines are obtained for the pair of equations a1x+b1y+c1=0 and a2x+b2y+c2=0 if
The condition for a pair of equations a1x+b1y+c1=0 and a2x+b2y+c2=0 to be parallel is