Objective
To write equations that represent functions
In the Solve It, you can see how the value of one variable depends on another. Once you see a pattern in a relationship, you can write a rule.
Essential Understanding Many real-world functional relationships can be represented by equations. You can use an equation to find the solution of a given real-world problem.
How can a model help you visualize a real-world situation?
Use a model like the one below to represent the relationship that is described.
Insects You can estimate the temperature by counting the number of chirps of the snowy tree cricket. The outdoor temperature is about 40°F more than one fourth the number of chirps the cricket makes in one minute. What is a function rule that represents this situation?
Relate | temperature is 40°F more than
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Define | Let T = the temperature. Let n = the number of chirps in 1 min. |
Write |
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A function rule that represents this situation is