Grade 8 Mathematics Vocabulary

• Irrational Number

• Rational Number

• Whole Number

• Integer

Tags

CCSS.L.1.6

CCSS.L.3.6

CCSS.L.K.5A

A letter or symbol that represents a missing number or unknown value. Generally, the letter is lowercase and italicized.

• Operation

• Variable

• Exponent

• Term

Tags

CCSS.L.7.6

CCSS.L.8.6

CCSS.W.7.2D

CCSS.W.8.2D

CCSS.W.9-10.2D

• Absolute Value

• Stretch Value

• Length

• Range

Tags

CCSS.RI.6.4

CCSS.RI.7.4

CCSS.RI.8.4

CCSS.RI.9-10.4

CCSS.RI.9-10.4

A mathematical expression that contains one or more variables.

For example:  4x + 3

• Numerical Expression

• Verbal Expression

• Algebraic Expression

• Radical Expression

Tags

CCSS.L.7.6

CCSS.L.8.6

CCSS.L.9-10.6

CCSS.W.8.2D

CCSS.W.9-10.2D

• Rational Number

• Irrational Number

• Whole Number

• Integer

Tags

CCSS.L.1.6

CCSS.L.3.6

CCSS.L.K.5A

A mathematical sentence or statement relating to two equal quantities. When written in mathematical notation, it always contains an equal sign.

For example:  4x + 3 = 11

• Expression

• Inequality

• Operation

• Equation

Tags

CCSS.L.7.6

CCSS.L.8.6

CCSS.L.9-10.6

CCSS.W.7.2D

CCSS.W.8.2D

A relation in which each input value (independent variable) is associated with exactly one output value (dependent variable).

This is where the "x" or domain values cannot repeat.

• Nonlinear

• Function

• Domain

• Range

The number in front of a variable. The number is being multiplied by the variable.

For example, in the expression 7x, the “7.”

• Coefficient

• Constant

• Like Terms

• Variable

Tags

CCSS.L.11-12.4C

CCSS.L.6.4C

CCSS.L.7.4C

CCSS.L.8.4C

CCSS.L.9-10.4C

A singular line created on a scatter plot to best estimate the relationship between the two sets of data. The line is used to describe the trend of the data, illustrating a positive or negative correlation.

• Line of Association

• Line of Correlation

• Line of Trend

• Line of Best Fit

A mathematical relationship between two variables that can be represented by a straight line.

For example, the distance traveled (d) over a constant speed (s) can be represented by the following function: d = 60s

• Direct Variation

• Linear Function (Linear Relationship)

• Inverse Relationship

• Nonlinear Function (Nonlinear Relationship)

Tags

CCSS.8.F.A.3