1. Chapter 4 Vocabulary
Functions

2. an equation or formula that has more than one variable.
Linear Equation-
an equation or formula that has more than one variable.
(lesson 1)

3. Relation, Domain, & Range
Lesson 2
Relation, Domain, & Range
DOMAIN
The set of x-coordinates in a relation
D: {-2, 1, 0}
RELATION
Any set of ordered pairs
{(-2, 3), (1, 2), (0, -1)}
RANGE
The set of y-coordinates in a relation
R: {3, 2, -1)}

4. Lesson 3
Each member of the domain is paired with exactly one member in the range.
IF there is more than one range for a given domain, then it is NOT a function.

5. A relationship in which EACH MEMBER of the domain (input) is
FUNCTION
A relationship in which EACH MEMBER of the domain (input) is
paired with EXACTLY member of the range (output).
NOTE: Some functions can have “one-to-one” relationships,
each input can have a “best buddy” in the output.
Lesson 3

6. LINEAR FUNCTION CONTINUOUS DATA DISCRETE DATA
A function in which the graph of the solutions form a line
CONTINUOUS DATA
Data that can take on any value. There is no space between data values for a given domain. Solid line graphs.
DISCRETE DATA
Data with space between possible data values.
Graphs are represented by dots.

7. INDEPENDENT VARIABLE
DEPENDENT VARIABLE
Lesson 3

8. Know the vocabulary!
Lesson 4

9. Lesson 4

10. Let’s get started! Quadratic Function:
Standard Form of a Quadratic Function:
A function that can be written in the form y = ax2 + bx + c
A quadratic function where a ≠ 0
Quadratic Parent Function:
EXAMPLES:
y = 3x2
y = x2 + 9
y = x2 - x - 2
Let’s get started!
The simplest form of the quadratic function:
y = x2
Lesson 8

11. Parabola Axis of Symmetry Vertex The graph of a quadratic function
Lesson 8
Parabola
The graph of a quadratic function
The U-shaped curve
Axis of Symmetry
Vertex
The imaginary lines that divides the parabola in half equally
The highest or lowest point of a parabola

12. MAXIMUM
When the vertex represents the lowest point on the parabola
minimum
More about the vertex...
When the vertex represents the HIGHEST point on the parabola
Lesson 8