For what value of k do the equation 3x-y+8=0 and 6x-ky=-16 represent coincident lines

For what value of k do the equation 3x-y+8=0 and 6x-ky=-16 represent c

1.	For what value of k do the equation 3x-y+8=0 and 6x-ky=-16 represent coincident lines
Answer» Your Quostion is Not Valid Becouse There is value of X is not Given a1/a2=b1/b2=c1/c2= 3/6=-1/-k=8/16=3/6=1/k= 1/2= camparing = 3k=6=K =2