xXxGhostBoi2003xXx
xXxGhostBoi2003xXx xXxGhostBoi2003xXx
  • 19-01-2018
  • Mathematics
contestada

ASAP PLEASE 15 POINTS

Use addition to solve the linear system of equations. y= -3x+1 y=2x-4
(-2,1)
(1,-2)
(1,2)
(-1,-2)

Respuesta :

mathmate
mathmate mathmate
  • 19-01-2018
The given set of equations:
y=-3x+1............(1)
y=2x-4 .............(2)

can be solved most conveniently by rewriting as
y =-3x+1 = 2x-4

We concentrate on the right equality, which is expressed in x only:
-3x+1 = 2x-4
Transpose and solve for x
1+4 = 2x+3x
5x=5
x=5/5=1
Substitute x=1 in the 
first equation: y=-3(1)+1=-2
second equation: y=2*x-4=2(1)-4=-2

So the solution is x=1, y=-2, or (1,-2)

Answer Link
martzgutz
martzgutz martzgutz
  • 15-01-2020

Answer:

(1,-2) I got a 100%

Step-by-step explanation:

Answer Link

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