Question

find the value of K for which the pair of linear equations x+2y-5=0 and 3x+6y+k=0 represent coincident lines​

Answer 1

Step-by-step explanation:

a1/a2=b1/b2=c1/c2

1/3=2/6= -5/k

1/3= -5/k

K= -15

Answer 2

Step-by-step explanation:

x+2y-5=0

3x+6y+k=0

coincident line:

a1 /a2 =b1/b2=c1/c2

1/3=2/6= -5/k

1/3=-5/k

k=-5×3

k=-5