Question

Which ordered pair is the solution to the system of equations?

2x+y=-8
x-y=-4



A.
(−3, −2)

B.
(−1, 3)

C.
(1, 5)

D.
(−4, 0)

Answer 1

@SolomonZelman

Answer 2

solving a problem like this is usually a matter of solving for one variable and plugging that into the other equation.

Answer 3

Step 1) solve for a variable
x-y=-4
x=-4+y

Step 2) substitute into second equation and solve for the other variable.
2x+y=-8
2(-4+y)+y=-8
-8+2y+y=-8
3y=0 ---> y=0

Step 3) plug in solved variable to find unknown variable
y=0
x-y=-4 --->x-0=-4
x=-4

Therefore (-4,0)

Answer 4

wow thank you! can you help me with one more?

Answer 5

sure but do you understand what I did?

Answer 6

yeah i do:D

Answer 7

you listed it out for me I'm dyslexic so that really helped a lot

Answer 8

ok cool.
whats up?

Answer 9

Which ordered pair is the solution to the system of equations?

2x-5y-5
x+2=11

A.
(3, 4)

B.
(5, 3)

C.
(7, 2)

D.
(15, 7)

Answer 10

well, you tell me what is the first thing you would do here?