Sophinacons6hieFur Sophinacons6hieFur
  • 01-12-2016
  • Mathematics
contestada

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

{2x+y=−8
{x−y=−4

(1, 5)
(−3, −2)
(−4, 0)
(−1, 3)

Respuesta :

wizard123
wizard123 wizard123
  • 01-12-2016
Lets solve this with elimination.
Add both equations together, you will notice the y terms cancel each other out because "y-y = 0". This is what we want.

The result is:
[tex]3x = -12[/tex]
Divide both sides by 3
[tex]x = -4[/tex]

To find y-value, plug in x=-4 into 1st equation:
[tex]2(-4) +y = -8[/tex]
-8 +y = -8
y = 0

Solution is  (-4,0)
Answer Link

Otras preguntas

I need #4 done (show work) will give brainliest!
AN ACTIVITY THAT EMPLOYS A HIGH RATIO OF WORKERS TO INVESTED CAPITALS KNOWN AS A ACTIVITY?
The midpoint of the coordinates (4, 10) and (13,3) is __. O A. (9,7) B. (8.5, 6.5) C. (17, 13) O D. none of the above
Why are Marcel's and Stephanie's taxable incomes less than their annual salaries?
who agrees with me? my aret btw
how easy is it to learn about music
what are the zeroes of the function?
1. What character trait(s) does Jack display while he is facing danger? State specific trait(s) and cite relevant evidence to support the trait with correct cit
write a paragraph explaining the flow of energy through a food web. write a paragraph explaining the flow of matter through a food web.
Crispy Clover, a popular vegetarian restaurant, introduced a new menu that has 20% more dishes than the previous menu. The previous menu had D dishes. Which of