A graph of a relationship is shown.

A graph titled stretch versus force is shown with stretch on the vertical axis and force on the horizontal axis. The graph is a straight diagonal line from bottom left to top right.

Which of the following best describes the relationship between the two variables?

Stretch is directly related to force.
Stretch is inversely related to force.
Force is directly related to the square of stretch.
Force is inversely related to the square of stretch.