Question

Solve the system using a equivalent system.
-2x-y=0
3x-y=10

Answer 1

a.(4,-2)
b.(-2,4)
c.(2,-4)
d.(-4,2)

Answer 2

I think it's A, but I'm not sure.

Answer 3

Verify that it is C.

Answer 4

Could you explain?

Answer 5

Plug the answer choices into the equation. Which one checks out?

Answer 6

Plug in 2 for x and -4 for y in both equations. The result should be that the LHS should equal the RHS.