Question 107307
That's one way to do it but it'll require that you use a lot of points.
The more direct approach is to solve the equation.
{{{4x + y = 4}}} or re-arranged
{{{y=4-4x}}}
That equation is the equation of a line. 
Once you graph it, you will have two regions on either side of the graph. 
The line will split the region into two separate regions.
One region of the graph will be {{{4x+y<4}}} and the other region of the graph will be {{{4x+y>4}}}. 
You can then choose a point in the region and determine if that region is where 
{{{4x+y<4}}} or where {{{4x+y>4}}}. 
{{{ graph( 300, 300, -5, 5, -20, 20, 4-4x) }}}