Unit 7 Review

Unit 7 Review

Assessment

Flashcard

Mathematics

9th - 12th Grade

Hard

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15 questions

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1.

FLASHCARD QUESTION

Front

What is the absolute value of a number?

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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