1. Unit 3 Vocabulary

2. Ordered Pair
Two numbers written in a certain order. Usually written in parentheses like this: (4,5)

3. Discrete
A type of data is discrete if there are only a finite number of values possible or if there is a space on the number line between each 2 possible values.

4. Continuous line or curve
A line or curve that extends without a break or irregularity.

5. Independent/Dependent Variables
Independent Variable: The input variable of a function
Dependent Variable: The output variable of a function
The independent variable is the “x” values.
The dependent variable is the “y” values.

6. Function
A relation in which every element of the domain is paired with exactly one element of the range; that is, for every value of x, there is exactly one value of y.

7. What’s happening to the end of the graph??
End Behavior
The appearance of a graph as it is followed farther and farther in either direction.
What’s happening to the end of the graph??

8. Function Notation
A way to name a function using f(x) instead of y
NOT

9. Linear Equation
An equation that can be written in the form of ax + by = c, where a, b, and c are rational numbers; can also be written as
y = mx + b, in which m is the slope, b is the y-intercept, and the graph is a straight line. The solutions to the linear equation are the infinite set of points on the line.

10. X and Y intercepts
The x-intercept of a line is the point at which the line crosses the x axis. ( i.e. where the y value equals 0 )
The y-intercept of a line is the point at which the line crosses the y axis. ( i.e. where the x value equals 0 )

11. Solution Set
The set of ordered pairs that represent all of the solutions to an equation or a system of equations.

12. Domain In the ordered pairs: (1, 2), (3, 4), (5, 9), (6, 11)
The x values
The values of the independent variable
The input values
In the ordered pairs:
(1, 2), (3, 4), (5, 9), (6, 11)
The domain is: 1, 3, 5, 6

13. Range In the ordered pairs: (1, 2), (3, 4), (5, 9), (6, 11)
The y values
The values of the dependent variable
The output values
In the ordered pairs:
(1, 2), (3, 4), (5, 9), (6, 11)
The range is: 2, 4, 9, 11