Evaluating Functions

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What is a function?

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A function is a relation between a set of inputs and a set of possible outputs where each input is related to exactly one output.

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How do you evaluate a function at a specific point?

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To evaluate a function at a specific point, substitute the value of the variable into the function's equation and simplify.

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This notation represents a function that calculates the distance of a train from its destination based on the number of hours traveled.

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What is the formula for a linear function?

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What is a quadratic function?

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

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The vertex of a quadratic function is the highest or lowest point on the graph, depending on the direction of the parabola.