What is the definition of a negative interval in a function's graph?
NC Math 3 2018 Released EOC Questions

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Mathematics
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9th - 12th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
A negative interval is a range of x-values where the function's output (y-values) is less than zero.
2.
FLASHCARD QUESTION
Front
How do you determine where a function is decreasing on its graph?
Back
A function is decreasing on an interval if, as x increases, the y-values decrease.
3.
FLASHCARD QUESTION
Front
What is the formula for combining work rates?
Back
If person A can complete a task in a hours and person B in b hours, together they can complete the task in \( \frac{1}{\frac{1}{a} + \frac{1}{b}} \) hours.
4.
FLASHCARD QUESTION
Front
What does the absolute value function represent?
Back
The absolute value function, denoted as |x|, represents the distance of x from zero on the number line, always yielding a non-negative result.
5.
FLASHCARD QUESTION
Front
What is the domain of a function?
Back
The domain of a function is the complete set of possible values of the independent variable (x) for which the function is defined.
6.
FLASHCARD QUESTION
Front
How do you find the interval where a function is positive?
Back
A function is positive on an interval if all y-values in that interval are greater than zero.
7.
FLASHCARD QUESTION
Front
What is the significance of the vertex in a quadratic function?
Back
The vertex of a quadratic function is the highest or lowest point on the graph, depending on the direction of the parabola.
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