1. Suppose that a paper bridge 4" long can support a weight of 45 pennies and a bridge of 11" long can support a weight of 3 pennies. Construct a graph of this data, describing what is the independent variable and what is the dependent variable, and connect the two points with a line or a curve that you predict reflects the relationship between these two variables.

2. Based on your graph, explain in words, using mathematical language, exactly what happens to the breaking weight of a bridge as its length increases, assuming there is no change in its thickness.

Having trouble running our Java apps? Get help here.

Your feedback is important! Comments or concerns regarding the content of this page may be sent to nctm@nctm.org. Thank you.

Copyright © 2014, National Council of Teachers of Mathematics.