scale factor help plz

Answer:
The scale factor is 3/2 or 1 to 1.5
Step-by-step explanation:
Here, we want to find the scale factor of the first to the second
Since the triangles are similar, it follows that the corresponding sides are of equal ratio
So, we have the scale factor for the sides as;
6/4 or 9/6
= 3/2 or 1 to 1.5