Question

Find the value of k, if the pair of linear equations represents coincident lines.
3x + 4y = k 9x + 12y = 6

Answer 1

Answer:

k=2

Step-by-step explanation:

9x+12y=6

y=6-9x/12 . 1

1 in 3x+4y=k

3x+4(6-9x/12)=k

36x+24-36x=12k

24=12k

k is 2

Answer 2

Answer:

k = 2

Step-by-step explanation:

3x + 4y =k (1)

9x +12 y = 6

3(3x + 4y ) = 6

3x + 4y = 2 (2)

Equation (1) and (2) both are same

k =2 coincident line