5. The notation $|x|$ is used to denote the absolute value of a number, regardless of sign. For example, $|7|=|-7|=7$.
The graphs $y=|2 x|-3$ and $y=|x|$ are drawn on the same set of axes. What is the area enclosed by them?
5. 9 The enclosed area is a concave quadrilateral with vertices at $(-3,3),(0,0),(3,3)$ and $(0,-3)$. Considering this as two conjoined congruent triangles we find the area as $2 \times \frac{1}{2} \times 3 \times 3=9$.