Author:
Todd Parks

Student Outcomes

- Students recognize that the enlarged or reduced distances in a scale drawing are proportional to the corresponding distance in the original picture.
- Students recognize the scale factor to be the constant of proportionality.
- Given a picture or description of geometric figures, students make a scale drawing with a given scale factor.

Tutorial

A scale factor is a number which scales, or multiplies, some quantity.

In the equation** y = Cx, C** is the scale factor for x. C is also the __coefficient__ of x, and may be called the **constant of proportionality** of y to x.

For example, ** doubling** distances corresponds to a

http://www.ixl.com/math/grade-7/scale-drawings-and-scale-factors

This is the IXL 7th grade target **J.13** __Scale Drawings and Scale Factors.__ Perfect practice for Lessons 17, 18, and 19 of the 7th grade common core.