what is the solution of the following system?
{-2x - y = 1
{-4x - 2y = -1


A. infinite solutions
B. no solution
C. (3,8)
D. (-3,-8)

Respuesta :

it would be B. no solution
divide 2nd equation by 2

we get

-2x-y=1 and
-2x-y=-1/2
therefor

1=2x-y=-1/2
1=-1/2
false
no solution

B is answer