What is the absolute value of a number?
Unit 7 Review

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Mathematics
•
9th - 12th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
The absolute value of a number is its distance from zero on the number line, regardless of direction. For example, the absolute value of -17 is 17, written as | -17 | = 17.
2.
FLASHCARD QUESTION
Front
What are coordinate points?
Back
Coordinate points are pairs of numbers that define a position in a two-dimensional space, represented as (x, y). The first number is the x-coordinate (horizontal position), and the second is the y-coordinate (vertical position).
3.
FLASHCARD QUESTION
Front
What is a 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. It can be found using the formula x = -b/(2a) for the quadratic equation ax^2 + bx + c.
4.
FLASHCARD QUESTION
Front
What is a trinomial?
Back
A trinomial is a polynomial with three terms, typically in the form ax^2 + bx + c.
5.
FLASHCARD QUESTION
Front
How do you complete the square for the expression x^2 + 4x?
Back
To complete the square, take half of the coefficient of x (which is 4), square it (2^2 = 4), and add it to the expression: x^2 + 4x + 4 = (x + 2)^2.
6.
FLASHCARD QUESTION
Front
What is the standard form of a quadratic equation?
Back
The standard form of a quadratic equation is written as ax^2 + bx + c = 0, where a, b, and c are constants and a ≠ 0.
7.
FLASHCARD QUESTION
Front
What does it mean for a function to have a minimum value?
Back
A function has a minimum value at a point where the function's value is lower than at any nearby points. This is often found at the vertex of a parabola that opens upwards.
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