Answer:
-2 ≤ x < 0
y = 2x + 4
0 ≤ x < 2
y = 4
2 ≤ x < 4
y = -2x + 8
Step-by-step explanation:
We have to observe the graphic and see where each function begins (x1) and where each function ends (x2). Then, we can define the intervals for each function.