Asteel beam can cut two 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?

The information we will need to know is the value of k which is constant of proportionality.  

This means if we denote the weight as W and the length as L, then, we can write the proportion as;

W ∝ L

Getting rid of the proportion symbol, we have;

W = kL

Where; K is a constant of proportionality.

Read more at; link

None.

Step-by-step explanation:

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).

he answer is x=1x3 because x=1 to x=3