Mathematics
A. Solve the system of linear equations using graphical method.
1.2x–y=10
x–y=6
2.2x–3y=-6
B. Solve the system of linear equations using elimination method.
1.x+y=10
x–y=6
2.x-y=8
x-y=-2
C. Solve the system of linear equations using substitution method.
1.x+y=9
x–y=5
2.x+y=1
2x+y=-3
