Question 1003161
y = -1/2x - 3
4x -2y = 16 
divide both sides of = by 2
2x -y = 8
subtract 2x from both sides of =
-y = -2x + 8
divide both sides of = by -
y = 2x - 8
here is graph, note y = -1/2x - 3 is red, y = 2x - 8 is green
{{{ graph( 300, 200, -6, 5, -10, 10, (-1/2)x - 3, 2x - 8) }}}
solution is (2, -4), that is x = 2, y = -4