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

Need help lot of points with both
20. Identify the vertex of the parabola. A. (2, 7) B. (4, 3) C. (6, 7) D. (3, 4)
-9y + 8(4z + 3y) -6x PLZ HELP
Read this excerpt from an article about inventor Mary Anderson. Riding a trolley on a rainy day in New York City, Anderson noticed how the rain obscured the dri
what is .40 times 730292​
Most plant leaves take in more carbon dioxide as light increases. They give off carbon dioxide if light intensity is too low. The graph shows a plants carbon di
Pls help timed test will give brainly to most helpful answer
What is the equation of the line that passes through the point (2,-6)(2,−6) and has a slope of -1−1?
What is a obtuse scalene.
Mr. Jones wants to add a cement path around his new pool. The pool has a radius of 7 feet. The cement path will be 1 foot wide and go all the way around the po