Plotting Functions from a Word Problem

The video tutorial explains functions and relations using a real-life example of Billy working at Larry's Pizza. It covers the concepts of independent and dependent variables, graphing the relationship between hours worked and money earned, and understanding domain and range. The tutorial uses a practical scenario to make these mathematical concepts relatable and easy to understand.

What is the independent variable in the example of Billy working at Larry's Pizza?

• The number of dates Billy goes on

• The amount of money Billy makes

• The number of hours Billy works

• The number of pizzas sold

How is the money Billy earns calculated?

• By multiplying the number of hours worked by $10

• By subtracting $10 from the number of hours worked

• By dividing the number of hours worked by $10

• By adding $10 to the number of hours worked

What does the X-axis represent in the graph of Billy's earnings?

• The number of hours worked

• The number of pizzas sold

• The amount of money earned

• The number of customers served

What is the domain of the function representing Billy's earnings?

• Y is greater than or equal to 0

• Y is less than 0

• X is greater than or equal to 0

• X is less than 0

What is the range of the function representing Billy's earnings?

• X is less than 0

• Y is less than 0

• Y is greater than or equal to 0

• X is greater than or equal to 0