Solve the following system of equations:

-2x + y = 1
-4x + y = -1

(3, 1)
(-1, 3)
(-1, -3)
(1, 3)

Solve the system of equations.

2x - 5y = 3
x - 3y = 1

(4, 1)
(5, 2)
(7, 2)
(9, 3)

please help me and explain possibly?

Question

Solve the following system of equations: 

-2x + y = 1
-4x + y = -1

 (3, 1)
 (-1, 3)
 (-1, -3)
 (1, 3)

Solve the system of equations.

2x - 5y = 3
x - 3y = 1

 (4, 1)
 (5, 2)
 (7, 2)
 (9, 3)

please help me and explain possibly?

alexandervonhumboldt2 · Answer

sok so first y=1+2x and y=-1+4x.  thus   1+2x=-1+4x     now just solve for x: 2=2x.  x=1.  now substitue x inot one of the equations  and solve for y: -2*1+y=1    y=3
x=1     y=3

alexandervonhumboldt2 · Answer

to solve the second one first subtartc second equatino from first: 2x-5y-x+3y=3-1
x-2y=2       x=2+2y.

alexandervonhumboldt2 · Answer

then solve for x=2+2y  and x=1+3y

alexandervonhumboldt2 · Answer

1+3y=2+2y
y=1                       now substitue y inot one of the equations and solve for x. as the multiply choice question there is only one choice A with y=1