Question

solve 2x-y=1 if the domain of x is {-1,0,1}

Answer 1

just substitute the equation with x = -1, 0 and 1 will do....

Answer 2

2(-1)-y=1
multiply
-2-y=1
add "2" 2 crosses out on the left on the rigt it becomes 3
-y=3
remove the negetive by dividing and
y=-3

and do that so on and so forth withe the otuers

plug in 0 and 1 for x

Answer 3

I would probably start by solving for y:
2x-y=1
2x=1+y
2x-1 = y then plug in the values for x

Answer 4

2(-1) - 1 = y
-2 - 1 = y
-3 = y

2(0) - 1 = y
-1 = y

2(1) - 1 = y
2 - 1 = y
1 = y