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Q3 17-18Vocabulary1
Linear unit essential vocabulary
16
Mathematics
9th Grade
01/08/2018

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Term
System of equations
Definition
A collection of two or more equations with two or more variables
Term
Graph
Definition
A diagram showing the relation between quantities, typically of two variables, each measured along one of a pair of axes at right angles
Term
constant
Definition
A number that stands on its own or a letter that stands for a fixed number
Term
Rational
Definition
A number, quantity, or expression containing quantities that are expressible, as a ratio of whole numbers. When expressed as a decimal, a rational number has a finite or recurring expansion.
Term
Irrational
Definition
A number, quantity, or expression not expressible as a ratio of two integers, and having an infinite and nonrecurring expansion when expressed as a decimal. Examples of irrational numbers are the number π and the square root of 2.
Term
Coefficient
Definition
A numerical or constant quantity placed before and multiplying the variable in an algebraic expression (e.g., 4 in 4x y).
Term
Matrix
Definition
A rectangular array of numbers or other mathematical objects for which operations such as addition and multiplication are defined.
Term
Quadratic Function
Definition
A relation shown by the standard form equation f(x)=ax^2+bx+c, where a, b,and c are constants and "a" is not equal to zero
Term
Function
Definition
A set of ordered pairs in which none of the first elements of the pairs appears twice.
Term
Equation
Definition
A statement that the values of two mathematical expressions are equal
Term
variable
Definition
A value that can change depending on conditions
Term
Radical
Definition
An expression containing a radical (√) symbol. Many people mistakenly call this a 'square root' symbol, and many times it is used to determine the square root of a number. However, it can also be used to describe a cube root, a fourth root, or higher.
Term
Linear
Definition
Points arranged in or along a straight or nearly straight line.
Term
Extraneous Solution
Definition
Sometimes called a spurious solution; it is a solution that emerges from the process of solving the problem but is not a valid solution to the problem.
Term
compound inequality
Definition
Two or more inequalities joined together by "and" or "or"
Term
System of Inequalities
Definition
Two or more inequalities, with two or more variables.
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