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Question

What is the equation of the line passing through the point of intersection of the lines x+2y3=0 and 2xy+5=0 and parallel to the line yx+10=0?

A
7x7y+18=0
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B
5x7y+!8=0
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C
5x5y+18=0
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D
xy+5=0
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Solution

The correct option is A 5x5y+18=0
x+2y3=0........................(i)
2xy+5=0.......................(ii)

1× (i)+2× (ii), we get

5x+7=0

x=75

putting value of x in (i), we get

75+2y3=0y=115

x=75,y=115

and slope of yx+10=0y=(x10) is =1

Therefore, Equation of the line will be,
(y115)=(x75)5y11=5x+75x5y+18=0

Therefore, Answer is C

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