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Question

Which of the following is true about the three lines
L1:x3y+7=0,L2:2x+y3=0 and L3:7x+7y2212=0

A
Lines form a triangle
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B
Lines are concurrent
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C
Lines can not bound any region
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D
None of these
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Solution

The correct option is B Lines can not bound any region
Given equations of lines as
L1:x3y+7=0
Slope of L1=13
L2:2x+y3=0
Slope of L2=2
L3:7x+7y2212=0
Slope of L3=2
L2 and L3 are parallel
Hence, lines cannot bound any region.

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