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ACT Math and Assessment - Math

Here you will learn some English words related to math, such as "histogram", "theorem", "matrix", etc. that will help you ace your ACTs.

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ACT Vocabulary for Math and Assessment
function

(mathematics) a quantity whose value changes according to another quantity's varying value

[noun]
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Definition & Meaning of \"function\"
to model

to make a representation of something, especially one based on mathematics

[Verb]
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Definition & Meaning of \"to model\"
constant

a quantity or value that remains the same and does not change in a specific mathematical context

[noun]
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expression

a combination of numbers, variables, operations, and grouping symbols that collectively represent a numerical value or relationship

[noun]
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Definition & Meaning of \"expression\"
equivalent

(of mathematical expressions or quantities) having the same value or function, even if they appear in different forms

[Adjective]
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Definition & Meaning of \"equivalent\"
variable

(mathematics) a quantity that is capable of assuming different values in a calculation

[noun]
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scale

a system of numerical values used to quantify and compare levels, degrees, or values

[noun]
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Definition & Meaning of \"scale\"
figure

a symbol that represents any number between 0 and 9

[noun]
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Definition & Meaning of \"figure\"
domain

the set of all possible input values for which a given function is defined

[noun]
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Definition & Meaning of \"domain\"
graph

(mathematics) a set of points whose coordinates are in agreement with one another

[noun]
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Definition & Meaning of \"graph\"
diagram

a graphic design intended to explain something

[noun]
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Definition & Meaning of \"diagram\"
histogram

a diagram consisting of bars with different heights that represent the amount of a variable

[noun]
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Definition & Meaning of \"histogram\"
scatter plot

a type of graph used in statistics and data analysis to display and compare two sets of numerical data

[noun]
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Definition & Meaning of \"scatter plot\"
intercept

the point where a line, curve, or surface crosses an axis on a graph

[noun]
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Definition & Meaning of \"intercept\"
plane

a flat, two-dimensional surface that extends infinitely in all directions

[noun]
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Definition & Meaning of \"plane\"
coordinate

any set of numbers that represent an exact position on a map or graph

[noun]
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Definition & Meaning of \"coordinate\"
line of best fit

a straight line drawn through the center of a group of data points on a scatter plot representing the best approximation of the relationship between the variables being studied

[noun]
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Definition & Meaning of \"line of best fit\"
to intersect

to meet or cross another path, line, etc. at a particular point

[Verb]
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Definition & Meaning of \"to intersect\"
interval

a set of real numbers that includes all the numbers between any two specified numbers within the set

[noun]
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Definition & Meaning of \"interval\"
linear function

a mathematical function that creates a straight line when graphed

[noun]
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Definition & Meaning of \"linear function\"
rational function

a function that can be expressed as the ratio of two polynomials, where the denominator is not zero

[noun]
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Definition & Meaning of \"rational function\"
integer constant

a fixed numerical value that is a whole number, either positive, negative, or zero

[noun]
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Definition & Meaning of \"integer constant\"
nonlinear

not following a straight or predictable line, sequence, or pattern

[Adjective]
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Definition & Meaning of \"nonlinear\"
to correspond

to have a direct relationship or alignment with something else, such as paired values or elements

[Verb]
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term

a single number, variable, or the product of numbers and variables in an expression or equation, separated by addition or subtraction operators

[noun]
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axis

a reference line used in coordinate systems to provide a framework for locating points

[noun]
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polynominal function

a mathematical function that can be expressed as a sum of terms, where each term is a constant multiplied by a variable raised to a non-negative integer power

[noun]
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Definition & Meaning of \"polynominal function\"
to satisfy

to fulfill the conditions or requirements of a mathematical statement, equation, or inequality

[Verb]
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Definition & Meaning of \"to satisfy\"
coefficient

a numerical or constant factor that multiplies a variable in an algebraic term

[noun]
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Definition & Meaning of \"coefficient\"
quadratic

an equation where the highest power of the variable is squared

[noun]
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Definition & Meaning of \"quadratic\"
regression

a statistical method used to model and analyze the relationship between a dependent variable and one or more independent variables

[noun]
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Definition & Meaning of \"regression\"
equidistant

having equal distances from two or more points

[Adjective]
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Definition & Meaning of \"equidistant\"
collinear

having points that lie on the same straight line

[Adjective]
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Definition & Meaning of \"collinear\"
theorem

a statement or proposition that has been proven to be true based on previously established axioms, definitions, and other theorems within a particular mathematical or logical system

[noun]
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Definition & Meaning of \"theorem\"
period

a recurring interval or length associated with a mathematical function or pattern

[noun]
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Definition & Meaning of \"period\"
to evaluate

to find the numerical value of an expression, equation, or function by substituting specific values for the variables

[Verb]
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Definition & Meaning of \"to evaluate\"
expanded notation

a way of representing numbers as the sum of each digit multiplied by its place value

[noun]
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Definition & Meaning of \"expanded notation\"
scientific notation

a method of writing numbers as the product of a coefficient and a power of 10

[noun]
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Definition & Meaning of \"scientific notation\"
matrix

a rectangular array of numbers or symbols organized in rows and columns, commonly used in linear algebra for representing equations, transformations, and vector operations

[noun]
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Definition & Meaning of \"matrix\"
determinant

a single number calculated from the elements of a square matrix that indicates important properties, like whether the matrix can be inverted

[noun]
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Definition & Meaning of \"determinant\"
factorial

the product of all positive whole numbers from 1 to a given number

[noun]
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Definition & Meaning of \"factorial\"
vector

an ordered set of numbers that describes both magnitude and direction, commonly used to represent quantities like displacement, velocity, or force in physics and engineering

[noun]
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Definition & Meaning of \"vector\"
standard coordinate plane

a two-dimensional system used to represent points in space

[noun]
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trigonometric function

a mathematical function that relates the angles of a triangle to the lengths of its sides, commonly including sine, cosine, and tangent

[noun]
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Definition & Meaning of \"trigonometric function\"
augmented matrix

a way of representing a system of linear equations in matrix form

[noun]
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Definition & Meaning of \"augmented matrix\"
unit vector

a vector that has a magnitude of 1 and represents direction without regard to scale

[noun]
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Definition & Meaning of \"unit vector\"
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