Respuesta :

Answer: it has infinite solutions.

Step-by-step explanation:

[tex]y=3x-4\\-3y=-9x+12[/tex]

Plug y in the second equation.

[tex]-3y=-9x+12\\-3(3x-4)=-9x+12\\-9x+12=-9x+12\\-9x+9x=12-12\\0=0[/tex]