The condition for a pair of equations a1x+b1y+c1=0 and a2x+b2y+c2=0 to be parallel is
≠ = .
= ≠ .
= = .
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The condition for a pair of lines a1x+b1y+c1=0 and a2x+b2y+c2=0 to be parallel is a1a2=b1b2≠c1c2.
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
What can you tell about the ratio of coefficients for the llines a1x+b1y+c1=0 and a2x+b2y+c2=0 from the graph?
What can you tell about the ratio of coefficients of the lines a1x + b1y + c1 = 0 and a2x + b2y + c2 = 0 from the graph ?
What can you say about the ratio of the coefficients for the lines a1x+b1y+c1=0 and a2x+b2y+c2=0 from the graph ?