Question 395633
  <pre><font size = 3 color = "indigo"><b>
Hi
Solving by substitution
-x + y =1  OR y = x+1
2x - 3y = -7
2x - 3(x+1) = -7
  -x -3 = -7
     x = 4 and y = 5   (4+1)
{{{drawing(300,300, -6, 6, -6, 6, grid(1),
circle(4, 5,0.3),
circle(0, 1,0.3),
circle(0, 7/3,0.3),
graph( 300, 300, -6, 6, -6, 6,0,x+1,(2/3)x+7/3))}}}