Answer: 4
Step-by-step explanation:
From the given picture, To find scale factor between figures, find two corresponding sides and write the ratio of the two sides.
The value of y is same through the distance of F to G.
So, FG= change in x coordinates
FG= units
Similarly , F'G'= units
Let k be the scale factor of the dilation.
The scale factor of the dilation is given by :-