DLD 11-5-24 -- Domain and Range of Quadratic Functions

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What is the definition of 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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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.

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What is a quadratic function?

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How do you find the vertex of a quadratic function?

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What does it mean for a function to have a domain of all real numbers?

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A function with a domain of all real numbers means that any real number can be used as an input for the function.

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The domain of this quadratic function is all real numbers.

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How do you determine the range of a quadratic function that opens downwards?

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For a downward-opening quadratic function, the range is all values less than or equal to the y-coordinate of the vertex.

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What is the significance of the y-intercept in a quadratic function?

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