Answer:
[tex]y=-1[/tex]
Step-by-step explanation:
We get the equation [tex]2x-y=1[/tex], and [tex]x=0[/tex]. Since we know the value of [tex]x[/tex], that it is equal to 0, we can plug this into the equation for [tex]x[/tex]:
[tex]2(0)-y=1[/tex]
From here, we can multiply 2 by 0 and then divide both sides by -1 to isolate [tex]y[/tex] and get what it's equal to.
[tex]0-y=1[/tex]
[tex]-y=1[/tex]
[tex]y=-1[/tex]
Hope this helps!
