Question

Does the system have no solution?​

Answer 1

`\mathrm{A)\:}-6`

Explanation:

Notice that in the second equation, the coefficient of
`y` is
`2` times greater than in the first. Therefore, by making the coefficient of
`x` in the second equation
`2` times greater than in the first, it's impossible to only isolate one variable.

Therefore, when
`a=-3\cdot 2=\fbox{-6}`, there are no solutions to this system.