Question 669613
Use a graphing calculator to graph 2x+y=5 (green line) and x-y=4 (blue line)


{{{ drawing(500, 500, -10, 10, -10, 10,
 graph( 500, 500, -10, 10, -10, 10,0,-2x+5,x-4),
 grid(1)
)}}}


Since the two lines intersect at the point (3,-1), this means that the answers are x = 3 and y = -1