Solution:
The graph of a radical function is as shown below:
The graph of a polynomial is as shown below:
Given the graph function below:
The graph is a thus a polynomial graph.
A polynomial graph will have an even degree when the curve is symmetrical about the y-axis, where as when the curve is symmetrical about the origin, the polynomial graph will have an odd degree.
From the given graph, we observe that the curve is symmetrical about the y-axis.
Thus, the graph function is a polynomial function with an even degree.
