PreCal Unit 1 Day 1-4 Review

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What is a function?

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A function is a relation that assigns exactly one output for each input. In other words, for every x-value, there is one and only one corresponding y-value.

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What is the definition of a mapping that is not a function?

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A mapping is not a function if at least one input is associated with more than one output.

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The range is all real numbers since it is a linear function.

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Yes, it represents y as a function of x because for every x, there is exactly one y.

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What is the vertical line test?

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The vertical line test is a method to determine if a curve is a function. If any vertical line intersects the curve more than once, it is not a function.

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What is the definition of 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.