Question

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Answer 1

Explanation:

Im not positive but,

2x - y = 1

2(-1) - ? = 1

Change it around

2(-1)= -2

-2 + 1= -1

Then (it bugged out)

Switch it back

(2×(-1))-1=

-3

-3 = y its that or -1

I dont know if i did this right I'm using my class notes

Answer 2

`2x - y = 1 \\ 2( - 1) - y = 1 \\ - 2 - y = 1 \\ y = - 3`