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

Please someone help me!!! It’s solving for x (Due at 3:00 pm)
Select all the correct answers.When monitoring the species on an island, scientists found several members of a new species they had never seen before in their s
Evaluate the expression when x= -2 and y = 4 Expression: x² - 8 у
What would the answer be simplified?
windows 93 it is a website THE QUESTION IS WHAT IS THE FIRST THING THAT POPS UP WHEN YOU OPEN THE WEBSITE?
Why do you think Janie and Joe rub some of the people in Eatonville the wrong way?
A solid sample is hit with a hammer and breaks into jagged, irregular shards. What type of solid was it? A) molecular solid b) network solid c) ionic solid d)me
What is three different ways to write 5^11 power as the product of two different powers please help.
Suppose that Fizzo and Pop Hop are the only two firms that sell orange soda. The following payoff matrix shows the profit (in millions of dollars) each company
which is a right triangle formed using a diagonal through the interior of the cube? triangle AEH