The pair $3x=7y+4$ and $14x=6y-8$ of linear equations represents two lines which are

If a pair of linear equations in two variables is inconsistent, then the lines represented by these equations are

The pair of equations $x=a$ and $y=b$ graphically represents lines which are

The value of $k$ for which the equations $3x-y+8=0$ and $6x-ky=-16$ represent coincident lines is

If the lines represented by $3x+2ky=2$ and $2x+5y+1=0$ are parallel, then the value of $k$ is