The given system of equations is expressed as
- 4x - 6y = -48
y = - 2x
To solve by sustitution, we would substitute y = - 2x into the first equation. It becomes
- 4x - 6(- 2x) = -48
- 4x + 12x = - 48
8x = - 48
x = - 48/8
x = - 6
Substituting x = 6 into y = - 2x, it becomes
y = - 2*-6
y = 12
The solution is (- 6, 12)