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maths

maths

by mushahid noor -
Number of replies: 1

the lines given by x^2+2xy-35y^2-4x+44y-12=0 and the line 5x+2y-8=0 are      1)parallel 2)concurrent 3)coincident 4)none of these.

please help in solving.              

In reply to mushahid noor

Re: maths

by Braj Arora -

x2+2xy-35y2-4x+44y-12=0

x2-2x(2-y)-35y2+44y-12=0

The above quad. in x gives two solutions:

 x=5y-2 & x=-7y+6

The lines x-5y+2=0, x+7y-6=0 & 5x+2y-8=0 are concurrent.