4.1 - 4.2 Daily Grade

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What is 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. For example, if a function has a maximum value of 6, the range can be expressed as y ≤ 6.

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What is the Domain of a function?

Back

The Domain of a function is the set of all possible input values (x-values) that the function can accept. For example, if a function can take any real number, the domain is expressed as -∞ < x < ∞.

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Front

What is the domain of the function defined by the interval [-3, ∞)?

Back

The domain of the function is all real numbers x such that x is greater than or equal to -3.

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What does it mean for a function to be increasing?

Back

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

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What does it mean for a function to be decreasing?

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A function is decreasing on an interval if, for any two points in that interval, the function value at the second point is less than the function value at the first point.

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What is a quadratic function?

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What is the vertex of a parabola?

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The vertex of a parabola is the highest or lowest point on the graph, depending on whether it opens upwards or downwards.

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What is the axis of symmetry in a quadratic function?

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