Here's one that's more complicated:

Sure, it looks like a lot...  But, just take each line one at a time!       This combo means that we are in the first quadrant:

So, we just need to concentrate on that...

Here's the shaded area:

     *You should graph all this on your own on a separate piece of
      paper for the practice!

All the points of intersection need to be checked:

(0, 4) should be where intersect... Does the point work?

(2, 6) should be where intersect... Does the point work?

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(5, 3) should be where intersect... Does the point work?

(5, 0) should be where intersect... This one obviously works!

 

YOUR TURN: