Help me awnser these questions please

Answer: y=x-1
General equation of linear function: [tex]y=mx+b[/tex]
A(-1;0); x=-1, y=0
B(0;-1); x=0, y=-1
Let's solve the system of equations
[tex]\displaystyle\\\left \{ {{0=-1m+b} \atop {-1=0x+b}} \right. =>b=-1=>0=-m-1;m=-1[/tex]