substitution for y=-8 and y=-2x-12
subsitute -8 for y so -8=-2x-12add 12 to both sides12-8=-2x+12-124=-2x+04=-2xdivide both sdie sby 22=-xmultiply -1-2=x
So,Substitute -8 for y-8 = -2x - 12Add 12 to both sides4 = -2xDivide both sides by -2-2 = x
