Open Middle®
Directions: Create 3 lines that have the same domain. Then, create 3 more lines that have the same range.
Hint
How can we use the x or y axis to help?
Answer
There are infinite answers, but any non-vertical lines would have the same domain. Any non-horizontal lines would have the same range.
Source: Dane Ehlert
How about this take:
“Create the equations of three line segments that all share one endpoint, but all have a unique second endpoint. Identify the domain, range, and all of the endpoints.”
An extension: Groups swap their end points, and see if they can determine the three equations and the domain and range.