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2014-10-20T22:00:05+05:30

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1. a intersecting line: 7x + 4y + 2 = 0 ( \frac{a1}{a2}  \neq  \frac{b1}{b2}  

2. a coincident line: 14x - 10y - 8 = 0  ( \frac{a1}{a2} = \frac{b1}{b2} = \frac{c1}{c2} )

3. parallel lines: 7x - 5y + 10 = 0  ( \frac{a1}{a2} = \frac{b1}{b2}  \neq  \frac{c1}{c2} )
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2014-10-21T16:53:37+05:30
1. 5x-5y-3 = 0                          a1/a2 is not equals to b1/b2  .

2.28x-20y-16 = 0                       a1/a2= b1/b2 = c1/c2.


3.28x-20x-15 = 0                        a1/a2 = b1/b2 is not equals to c1/c2.


1 5 1
now it is correct sir
sir give me one more chance