there will be more questions just like this...

Answer:
[tex]2x - y = 1 \\ 2( - 1) - y = 1 \\ - 2 - y = 1 \\ y = - 3[/tex]
Answer:
Step-by-step 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