Algebra 2 Chapter 1 Test Flashcards

What does the expression a > 0 indicate?

What does the expression a < 0 indicate?

What is the term for when 'a' is negative?

What is the term for when 'a' is positive?

What shape is the graph of a quadratic function represented by a half circle facing down?

What shape is the graph of a quadratic function represented by a half circle facing up?

What is indicated by a less than or greater than sign without a line underneath?

What is indicated by a less than or greater than sign with a line underneath?

What is the standard form of a quadratic equation?

In factoring, what does the 'b' value represent?

What is the Quadratic Formula?

What does the term 'i' represent?

How do you complete the square?

What is the discriminant?

What does a positive answer to the discriminant indicate?

What does a negative answer to the discriminant indicate?

What does an answer of 0 to the discriminant indicate?

Minimum and Maximum Values

A positive "a" indicates a minimum value in a quadratic function's graph.
A negative "a" signifies a maximum value in a quadratic function's graph.

Graph Orientation

A half-circle (parabola) facing downwards corresponds to a maximum result.
A half-circle (parabola) facing upwards represents a minimum outcome.

Parabola Types

The dotted parabola represents inequalities with less than or greater than signs that lack a line beneath.
A solid parabola represents inequalities with less than or equal to or greater than or equal to signs.

Quadratic Function Forms

The standard form of a quadratic equation is given by (x^2 + bx + c).
Factoring the quadratic involves two numbers that add up to the "b" value and multiply to the "c" value.

Key Formulas

The Quadratic Formula is used to find the roots of the quadratic equation: [ x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a} ]

Complex Numbers

The square root of a negative number is represented by (i), indicating the presence of imaginary numbers in solutions.

Completing the Square

Completing the square involves calculating (\left(\frac{b}{2}\right)^2) to transform the quadratic into vertex form.

Discriminant Significance

The discriminant, given by (b^2 - 4ac), determines the nature of the roots:
- A positive discriminant indicates two real solutions.
- A negative discriminant indicates two imaginary solutions.
- A discriminant equal to zero results in one real solution.

Test your knowledge of key concepts from Algebra 2 Chapter 1 with these flashcards. This quiz covers minimum and maximum values, as well as the significance of the signs related to the variable 'a'. Perfect for reviewing before a test!