QSE #2 Review

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Define the domain of a function.

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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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Define the range of a function.

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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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How do you express the domain of a function in interval notation?

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The domain is expressed as a range of values, for example, @@(- ∞, ∞)@@ for all real numbers.

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The range is @@(- ∞, 8]@@.

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Domain: all real numbers; Range: @@y ge 0@@.

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What is the significance of the vertex in a quadratic function?

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The vertex represents the highest or lowest point of the parabola, depending on its orientation.

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What does it mean for a function to be defined for all real numbers?

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It means that there are no restrictions on the input values (x-values) of the function.

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