Question 390953
  <pre><font size = 3 color = "indigo"><b>
Hi
by adding...we find the point the two lines may have in common.
4x+y= 7 
 x-y=-2
5x = 5
 x = 1  
4x+y= 7 
4*1+y= 7 
   y = 3
Lines intersect at Pt(1,3)which is the solution for the system
 {{{drawing(300,300, -6, 6, -6, 6, grid(1),
circle(1, 3,0.3),
graph( 300, 300, -6, 6, -6, 6, -4x+7,x+2))}}}