You are making a poster to support your friend for homecoming. Your original photo is 4 inches by 6 inches. You want the photo on the poster to be 2 feet by 3 feet. What is the scale factor of this dilation?

Question

anonymous · Answer

Look at the values for each side of the rectangle and divide them to see the scale.
In terms of length, you have a change from 4 to 2.
In terms of breadth, you have a change from 6 to 3.
In both cases, there has been a division by 2.
Hence, the factor is 1/2.

skrill3xmast3r · Answer

I  agree with @Hoslos