What is the domain of the square root function graphed below?

The domain of the graph must be .

Therefore,

Hence, option a is true.

Step-by-step explanation:

From the graph, it is clear that the graph is heading towards positive infinity from x=-4.

The point x=-4 is included in the graph as the starting point of the graph i.e. x=4 is showing a closed circle on x=4, and heading towards positive infinity onward.

i.e. [-4, ∞)

Hence, the domain of the graph must be .

Therefore,

Hence, option a is true.

1. perpendicular

2. parallel

3. perpendicular