Linear functions are of the form y=mx+b.

1. First find m.
   Look at the table and notice that every time the terms x go up by 1, the y terms go up by 1. This means that m is equal to 1.
   
   
2. Next find b.
   Take the equation y=mx+b and plug in the m value (m=1) and a pair of (x,y) coordinates from the table, such as (1,0). Then solve for b.
   
   

   y	=	mx+b
   0	=	1(1)+b		Plug in m=1, x=1 and y=0
   0	=	1+b		Simplify
   -1	=	b		Simplify

   
   
3. Finally, use the m and b values you found (m=1 and b=-1) to write the equation.
   
   

   y	=	mx+b
   y	=	1x-1		Plug in m=1 and b=-1
   y	=	x-1		Simplify

   
   
   So, the equation is y=x-1