jmc

The x and y axis of this graph break it down into four triangles each with the same area. We find that the x and y intercepts of this graph are $(0,5)$, $(0,-5)$, $(10,0)$, and $(-10,0)$. This means that the area of each triangle is $$\frac{1}{2}\cdot 5\cdot 10=25.$$ Therefore, the total area is $4\cdot 25=\boxed{100}$ square units.