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Question

Prove that the following sets of three lines does not meet in a point.
2x3y=7,3x4y=13, and 3x11y=33.

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Solution

2x3y=7......(i)x=7+3y23x4y=13.......(ii)3(7+3y2)4y=1321+9y8y=26y+21=26y=5x=7+3(5)2x=11
So the point of intersection of (i) and (ii) is (11,5)
3x11y=33......(iii)
Substituting the point of intersection in (iii)
3(11)11(5)=3355=222233
It does not satisfy the point of intersection , so they do not meet in a point


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