When you have two shapes to compare on a coordinate plane, you can determine the scale factor, knowing that the transformation was a dilation. generate instructions you would give another student to determine the scale factor.

Sample response

Locate two corresponding ordered pairs of the two shapes. Calculate how much the pre-image values were multiplied by to obtain the image values. This is your scale factor. You can calculate this by dividing the coordinates of the mage by the corresponding coordinates of the pre-image.