Question

A steel beam can be cut to different lengths for a project. Assuming the weight of a steel beam is proportional to

its length, what information would you need to know to write an equation that represents this relationship?

Answer 1

You can write a statement of proportionality without any additional information:

... weight = k × length . . . . . . . . for some constant k

If you need to know the specific weight of a specific length, then you need to know the constant of proportionality (the value of k).

Explanation: