*Step graphs are a kind of line segment graph whereby each segment is a horizontal line.*

In step graphs, open circles are used to represent that the value is not included in the interval. On the other hand, closed circles indicates that the value *is* included in the interval.

### Application

When mailing a package within the state, the costs for the weight of the package is calculated as follows:

- $8.25 Up to and including 500g
- $13.40 less than 3kg
- $17.10 less than 5kg

Draw a step graph of the cost (C) versus the weight (W) of a parcel.

This information can be reinterpreted as the following:

- $8.25 for
- $13.40 for
- $17.10 for

From this graph, it can be observed that a parcel weighing 0.5kg would cost $8.25 to post. however, a parcel weighing 0.51kg would cost $13.40 to post. A parcel weighing 4kg would cost $17.10 to post.

**See also: **

## Feedback

Want to suggest an edit? Have some questions? General comments? Let us know how we can make this resource more useful to you.