Answer: Maybe both Domain and range are 0 to positive infinity in the graph shown here.
BUT
This graph seems incorrect because m squared would normally be a parabola, not a straight line.
Anyway. . .
Explanation:
Range is normally the lowest y-value to the greatest y-value. You might remember that you go up and down over a mountain range.
In this graph, the solid dot on 0 means the lowest value is 0. The arrow goes to positive infinity.
Domain is the lowest x-value to the greatest x-value. Here, the domain is also 0 to positive infinity.