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Question

Find the slope of equation of the straight line passing through origin and the point of intersection of the lines x+2y=7 and xy=4.
  1. 0.2


Solution

The correct option is A 0.2
Given, 
The equations are x+2y=7 .. (i)
xy=4 .. (ii)

Subtracting (ii) from (i),
3y=3
y=1 .. (iii)

Putting (iii) in (ii)
x1=4
x=5
 
The point of intersection is (5, 1) 
As, the other point lies in the origin (0,0) so, 
The slope, m=1050 
m=15=0.2 

 

Mathematics

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