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Mathematics

Grades 7–8 Mathematics Vocabulary

25 essential words with definitions, examples, and quick-check quizzes.

Polynomial
noun
An algebraic expression with one or more terms, consisting of variables and coef...
Monomial
noun
An algebraic expression with a single term....
Binomial
noun
An algebraic expression with exactly two terms....
Coefficient
noun
The number that multiplies a variable in an algebraic expression....
Linear Equation
noun
An equation that graphs as a straight line and has variables with exponents of 1...
Quadratic
noun
An equation or expression with a variable raised to the second power as its high...
Slope
noun
The measure of steepness of a line, calculated as the ratio of vertical change t...
Intercept
noun
The point where a line crosses the x-axis or y-axis on a coordinate plane....
Function
noun
A relationship between inputs and outputs where each input has exactly one outpu...
Domain
noun
The set of all possible input values for a function....
System Of Equations
noun
A set of two or more equations with the same variables....
Matrix
noun
A rectangular arrangement of numbers in rows and columns....
Standard Deviation
noun
A measure of how spread out data values are from the average....
Correlation
noun
A relationship between two variables showing how they change together....
Regression
noun
A statistical method for finding the best-fitting line through a set of data poi...
Congruent
adjective
Having exactly the same size and shape....
Similar
adjective
Having the same shape but not necessarily the same size....
Theorem
noun
A statement that has been proven to be true using logic and evidence....
Pythagorean Theorem
noun
A theorem stating that in a right triangle, a² + b² = c², where c is the hypoten...
Hypotenuse
noun
The longest side of a right triangle, opposite the right angle....
Sine
noun
A trigonometric function defined as the ratio of the opposite side to the hypote...
Cosine
noun
A trigonometric function defined as the ratio of the adjacent side to the hypote...
Tangent
noun
A trigonometric function defined as the ratio of the opposite side to the adjace...
Logarithm
noun
The inverse function of exponentiation; the power to which a base must be raised...
Exponential
adjective
Growing or decreasing at a rate proportional to the current amount....

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