Well to graph this on the xb plane we need to substitute y in for b, because graphing software will graph they xb plane but can graph the xy plane. So every place that you see y just think of it as b in the equation:

and

So there is no solution for when y is between 2 and 2 and there are two solutions for when y is greater then 2 and less than 2.

Now lets investigate changing the 1 in the equation Lets first try the values 3, -2, -1, 0, 1, 2, 3 and see what happens.

It looks like all of these graphs are bounded by and the y axis, so lets take the x and y axis away from this picture and see what happens.

As you can see the y-axis was just hiding the other piece of the graph

As you can see by this 3-D graph, the graphis bounded between the green function which are planes representing in 3-D