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?

Answer 1

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

Answer 2

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

Answer 3

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

Answer 4

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