
Solve x + y = 6 and x  y = 2 using graphical method.
Ordered pairs for the graph y = x + 6
Ordered pairs for the graph y = x  2
The straight lines x + y = 6 and x  y = 2 are intersecting at the common point (4,2). Therefore the solution is (4,2). Verification: We want to verify the solution (4,2) is satisfy both equations. Substituting x = 4 and y = 2 in the given equations, we get x + y = 6 and x  y = 2 4 + 2 = 6 and 4  2 = 2 6 = 6 and 2 = 2 Therefore, the solution (4,2) is correct. Directions: Solve the following system of linear equations using graphical method. x + y = 4 and x  y = 2 2x + y = 5 and 3x  2y = 4 