Understanding Graphs and Domains Quiz

Which symbol is used in interval notation to indicate that an endpoint is included in the domain?

A graph shows the cost of a movie ticket as a function of age, where the domain is all ages from 5 to 18, including 5 and 18. What is the correct interval notation for the domain?

• The function is undefined everywhere

Which of the following best describes the difference between an open dot and a closed dot on a graph?

• Open dot means included, closed dot means not included

• Open dot means not included, closed dot means included

• Both mean included

• Both mean not included

A graph shows the cost of an Uber ride as a function of miles driven, starting at 1 mile (included) and ending at 10 miles (not included). What is the domain?

A ticket price graph is defined for ages greater than or equal to 12 and less than 65. What is the domain?