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  • What is the value of K so that the lines are coincident? <img alt

What is the value of K so that the lines are coincident?

l_1:kx+3y+6=0

l_2:4x+y+2=0

Option: 1

4/3


Option: 2

4


Option: 3

12


Option: 4

6


Answers (1)

best_answer

As we learnt

 

Coincident lines -

 

\frac{A_{1}}{A_{2}}=\frac{B_{1}}{B_{2}}= \frac{C_{1}}{C_{2}}

- wherein

The two lines are A_{1}x+B_{1}y+C_{1}=0  and A_{2}x+B_{2}y+C_{2}=0

 

 \frac{K}{4}=\frac{3}{1}=\frac{6}{2}\Rightarrow K=12

 

Posted by

Rakesh

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