# Linear Functions and Rate of Change - work in progress

- Author:
- Simona Riva

- Topic:
- Functions, Linear Functions, Straight Lines

## Graph of a linear function and slope

The graph of a function described by an equation of the form is a and we can calculate the (constant) slope of the line: .

*line*. For this reason we name the class of such functions as*linear functions*. If we know the coordinates of two points on the line,## Now try it yourself...

Move the points and in the app below, then enter the value of the slope of the line in the input box.
Select the

*Check answer*checkbox to verify your answer. Another checkbox will appear, allowing you to view the solution of the exercise. Deselect the*Check answer*checkbox to try again with the same line, or move the points in the xOy-plane and guess the slope of a new line.