ivan37 ivan37
  • 02-06-2017
  • Mathematics
contestada

What is the solution to the system of equations x-y=-1 and x-3y = 13

Respuesta :

Osiris7 Osiris7
  • 02-06-2017
Using process of substitution. 

x-y+y=-1+y

x=-1+y

Now substitute into x-3y=13

-1+y-3y=13
-1+1-2y=13+1
-2y=14

y=-7

Therefore, x= -8
Answer Link

Otras preguntas

Suppose we have already saved $55 towards the cost of a new television set. We plan to save $6 more each week for the next several weeks. i) Write an equation f
Which would be the correct answer?
How will the environment benefit from recycling ​
2^-5 • 2^8 plsss help
Riders on the Tower of Doom, an amusement park ride, experience 2.0 s of free fall, after which they are slowed to a stop in 0.50 s. A) What is a 65 kg rider's
Can someone please answer?
word is stronger than sword (conclusion)strict teacher here help​
7: A cyclist starts a race at 12:30 pm and finishes at 2:10 pm. How long does it take the cyclist to finish the race?
1 . he was telephoned by her ( into active voice ) 2 . He said to her , " I like yor smile very much ". ( indirect speech )3. It doesn't have any meaning . ( as
make a list of few of the importance of development?