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If the line 2x + 3y + 4 + k (- x + 2y + 5) = 0 is horizontal, then k = A. 0 B. 1 C. 2 D. 3

If the line 2x + 3y + 4 + k (- x + 2y + 5) = 0 is horizontal, then k = 
A. 0
B. 1
C. 2
D. 3

Grade:12th pass

2 Answers

Arun
25750 Points
4 years ago
Dear student
 
if this line is horizontally then coefficient of x should be zero.
 
hence 2- k = 0
hence k = 2
 
Vikas TU
14149 Points
4 years ago
Der student , 
Where ever horizontal component of line is given then put x =0 , 
Wherever vertical line is given put y =0 
So , here put x =0 
2-k =0 
k=2 
Hope this helps 
Cheers 

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