please help me with the 2nd part of this. What is it in interval notation?

Given:
The objective is to find the range of the graph.
Explanation:
The range of a graph represents the lowest point and highest point in the y-axis.
From the graph, the lowest point of the graph touches at -4 and the highest point touches at 5.
Then, the range in interval notation will be,
[tex]\lbrack-4,5\rbrack[/tex]Hence, the range of the graph in interval notation can be represented as [-4,5].