we have that

we know that
Triangles ABC and A'B'C' are similar
Step 
Find the distance AB and distance A'B' with the formula

a) distance AB



b) distance A'B'




Step 
Find the scale factor

therefore
the answer is
the scale factor of the dilation is equal to 
Answer:
x=2
Step-by-step explanation:
Answer:
the answer is A
Step-by-step explanation:
There is no solution to this