Which matrix equation represents the system of equations?

{-x+ 2y = 0
y= -2

We are given a system of equations,

This will translate into a 2x2 matrix of coefficients (because 2 equations and 2 unknowns),

The matrix will then be applied to the vector (lower dimensions on top),

And the result vector will be whats on the other side of equals sign,

So to put everything together,

Hope this helps :)

because 1.2 isnt half of 6 duh

it would open into a square depending on the type of envelope i’m not sure about the second part