Solve by substitution y=-3x-4

-6x-2y=-5

no solution

Step-by-step explanation:

First, it gives you y=-3x-4 for the first equation so you can plug in - 3x-4 into the second equation for y. Then you get - 6x-2 (-3x-4) = -5. When you distribute the - 2, you get - 6x+6x+8=-5. The 6x and - 6x cancel out so then you have 8=-5. This is never true meaning that there are no solutions and the lines are parallel.