Algebra 1 Vocabulary Review (Chapter 3)

Front 1

Discrete Graph

Back 1

The graph is only distinct points. The values between the whole numbers are not included because they have no meaning for the situation.

Front 2

Continuous Graph

Back 2

The graph is connected points or curves. The values between the whole numbers are included because the have meaning for the situation.

Front 3

Relation

Back 3

A set of ordered pairs...used to represent a relationship

Front 4

Domain

Back 4

the set of the first coordinates (or x-values) of the ordered pairs of a relation

Front 5

Range

Back 5

the set of the second coordinates (or y-values) of the ordered pairs of a relation

Front 6

Function

Back 6

special type of relation that pairs each domain value (x) with exactly one range value (y)...no x repeats!

Front 7

Independent Variable

Back 7

the input of a function
x-values
domain

Front 8

Dependent Variable

Back 8

the output of a function
y-values
range

Front 9

Function Rule

Back 9

an algebraic expression that defines a function

Front 10

Function Notation

Back 10

if y depends on x, then y can be replaced with f(x),"",, read "f of x"

Front 11

Graphing Functions Using Domain of All Real Numbers

Back 11

1. Choose several values for x
2. Substitute the chosen values for x to generate ordered pairs (x,y)
3. Plot the points and connect with smooth line or curve

Front 12

Scatter Plot

Back 12

a graph with points plotted to show a possible relationship, or correlation, between two sets of data

Front 13

Correlation

Back 13

describes a relationship between two sets of data...may be shown by a graph...helps you analyze trends and make predictions

Front 14

Positive Correlation

Back 14

Both sets of data values increase...as x increases, y also increases

Front 15

Negative Correlation

Back 15

In a set of data, as the x-values increase, the y-values decrease

Front 16

No Correlation

Back 16

In a set of data, there is no relationship between the x-values and the y-values

Front 17

Trend Line

Back 17

a line graphed on a scatter plot to help show a relationship in the data...can be used to make predictions based on the data

Front 18

Sequence

Back 18

a list of numbers that may form a pattern...each number in a sequence is called a term

Front 19

Arithmetic Sequence

Back 19

a sequence in which the terms of a sequence differ by the same nonzero number, called the common difference