Question 203262
Solve by graphing:
1) x-y = 3
2) x+y = 5
First solve the equations for y.
1) x-y = 3 Subtract x from both sides.
-y = -x+3 Now multiply both sides by -1 to make the y positive.
y = x-3
2) x+y = 5 Subtract x from both sides.
y = -x+5
Now the graph.
{{{graph(400,400,-5,5,-5,5,x-3,-x+5)}}} 
From the graph, you can see that the two lines intersect at the point (4, 1) and this is the solution to the system of equations.