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constant
A value that does not change
Variable
A symbol used to represent a quantity that can change
Coefficient
A number is multiplied by a variable in an algebraic expression.
algebreic expression
A combination of variables, numbers, and at least one operation.
ratio
A comparison of two quantities by division
proportion
an equation that states that two ratios are equal
scale
the ratio of any length in a scale drawing or scale model to the corresponding actual length
scale drawing
a drawing that is the same shape as the object it represents
scale model
a model used to represent an object that is too large or too small to be built at the actual size
rate
A ratio that compares two quantities measured in different units
conversion factor
a ratio of equivalent measurements
numerical expression
An expression that contains only numbers and operations
equivalent expressions
Expressions with the same value
Literal Equations
equations that contain two or more variables and sometimes no numbers at all
compound statement
two or more statements joined by the word "and" or "or"
intersection
the point at which two lines or roads meet and cut across each other
union
combined region, of the simple inequality graphs
less than
Less than is used to compare two numbers when the first number is smaller than the second number.
less than or equal to
≤
more than
more than or equal to
greater than or equal to
Domain
input, x value, independent variable
Range
output, y value, dependent variable
function notation
A list or sentence containing the values that represent the domain or range of a function
relation
any set of ordered pairs
function
a relation in which each element of the domain is paired with exactly one element of the range
verticle line test
draw a vertical line anywhere(everywhere) if it crosses the graph in one place, the graph is a function
function machine
An imaginary machine used in MATHEMATICS to change numbers according to a given rule.
independent variable
a variable (often denoted by x ) whose variation does not depend on that of another.
dependent variable
a variable (often denoted by y ) whose value depends on that of another.
function rule
an equation that describes a function
function (graph)
Every x goes to only one y. A graph passes the vertical line test.
