Final answer:
The scale factor is a ratio that compares the dimensions of a scale drawing to the actual dimensions of an object.
Step-by-step explanation:
The scale factor is a ratio that compares the dimensions of a scale drawing to the actual dimensions of an object. It tells you how many times smaller or larger the scale drawing is compared to the actual object. To find the scale factor, you can write a proportion using the given measurements. For example, if the scale factor is 2 inches to 3 feet, the proportion would be 2:3 = x:12, since 3 feet is equal to 12 inches. Solving this proportion would give you the scale factor of 1/6.