NDA Math Coordinate System and Straight Line

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For the next two (2), items that· follow :
Consider the two lines
x+y+1=0 and 3x+2y+1=0
Equations of lines
x+v+1=0
3x+2y+1=0

3x+3y+3=0
3x+2y+1=0

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   y=2
   x=1
Points of intersection (1,2)
[NDA I 2016]
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