Answer: B: x² + 4, x < 2 & -x+4, x ≥ 2
Step-by-step explanation:
The first equation is a parabola, x² + 4. It has a constraint on the x axis, of < 2, because the graph shows a hollow dot at x = 2.
For the linear equation, -x +4, the constraint on the x-axis is x ≥ 2. We can tell this from the filled dot at x = 2.