Unit 3 Vocabulary

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

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.

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

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.

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.

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??

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

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.

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 )

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

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

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