Semester Exam Review Precalculus

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Calculate the average rate of change from 20 to 40 minutes.

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The average rate of change is -2 gallons per minute.

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Identify the increasing interval for the function.

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The increasing interval is (-1, 1).

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What is the definition of a function's domain?

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The domain of a function is the set of all possible input values (x-values) for which the function is defined.

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What is the definition of a function's range?

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The range of a function is the set of all possible output values (y-values) that the function can produce.

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What is an asymptote?

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An asymptote is a line that a graph approaches but never touches.

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What does it mean for a function to be increasing?

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A function is increasing on an interval if, for any two points in that interval, the function's value at the second point is greater than at the first.

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What is the formula for the average rate of change of a function between two points?

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