If (3,7) is a solution of 7x=ky+14, find the value of k.
If the line (3x+14y+7)+k(5x+7y+6)=0 is parallel to y-axis then the value of k is
If the line (3x+14y+7)+k(5x+7y+6)=0 is parallel to the y-axis, then the value of k is