3x+7y=12 6x-ky=6 for which of the following values for k will the system of equations above has no solution ? -14 -7 0 7 14

Question

3x+7y=12                                                                6x-ky=6  for which of the following values for k will the system of equations above has no solution ?  -14  -7  0  7  14

anonymous · Answer

Substitute each possible value into the equations to see if they work

anonymous · Answer

After you substitute a value in, solve the system.
example: 6x - (-14)y = 6
                3x  + 7y    = 12

I'd multiply   - 2(3x  + 7y    = 12 ) then add it to the top equation.
Does that help