From the graph the area of the polygon Q is 4.5 square units.
The area of polygon P is 72.
The ratio of area of polygon is equal to the square of scale factor. So,
[tex]\begin{gathered} \frac{4.5}{72}=m^2 \\ m=\sqrt[]{\frac{1}{16}} \\ =\frac{1}{4} \\ =0.25 \end{gathered}[/tex]
So scale factor Diego used to go from polygon P to Q is 0.25 or 1/4.
Answer: 1/4 or 0.25
