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# Real life function examples! - PowerPoint PPT Presentation

Real life function examples!. By: Harrison Horne & Jordan Sailus. What is a function?. A function is used to model a rate of change between two variables. For example: 12 inches in a foot its always 12 inches so the function would be: y=12x. That is a function and an example.

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### Real life function examples!

By: Harrison Horne & Jordan Sailus

• A function is used to model a rate of change between two variables. For example: 12 inches in a foot its always 12 inches so the function would be: y=12x. That is a function and an example.

• One real life example of a function is a cell phone company’s cell phone plan.

• If a company charges say \$25 as a set up fee for a cell phone then charges \$0.10 cents for each minute on the phone the function would be: y = 0.10x + 25. That is a basic example of a real life function.

• The Range and domain for the equation y=0.10x+25 would be:

• Range:.10-25

• Domain: is .10 because it’s the value next to x value.