Answer :
subsitute -8 for y so
-8=-2x-12
add 12 to both sides
12-8=-2x+12-12
4=-2x+0
4=-2x
divide both sdie sby 2
2=-x
multiply -1
-2=x
-8=-2x-12
add 12 to both sides
12-8=-2x+12-12
4=-2x+0
4=-2x
divide both sdie sby 2
2=-x
multiply -1
-2=x
So,
Substitute -8 for y
-8 = -2x - 12
Add 12 to both sides
4 = -2x
Divide both sides by -2
-2 = x
Substitute -8 for y
-8 = -2x - 12
Add 12 to both sides
4 = -2x
Divide both sides by -2
-2 = x