Answer: D
Step-by-step explanation:
y = x + 6 is a straight increasing line that intercepts the y axis at 6. x <= 1 indicated the closed circle and the left of that graph.
y = x^2 + 3 is an upward facing parabola where the minimum is 3. The x > 1 indicates the open circle and the right of that graph.
D shows the correct functions graphed
