Answer:
1) x=6, y=-6 which is (6,-6) as an ordered pair
3) x=10, y=-1 which is (10,-1) as an ordered pair
Step-by-step explanation:
Question 1:
Solve them like an addition problem:
-4x-2y=-12
4x+8y=-24
________
(-4x+4x)+(-2y+8y)=(-12+-24)
0x+6y=-36
6y=-36
y=-6
Plug value of y into one of the original equations:
4x+8(-6)=-24
4x-48=-24
4x=24
x=6
Question 3:
Solve them like an addition problem:
x-y=11
2x+y=19
_______
(x+2x)+(-y+y)=11+19
3x+0y=30
3x=30
x=10
Plug value of x into one of the original equations:
10-y=11
-y=1
y=-1
