8Th Math Academic Vocabulary

Front 1

absolute value

Back 1

the distance from 0 on a number line

Front 2

cube root

Back 2

a number multiplied by itself three times as a factor

Front 3

integer

Back 3

set of whole numbers and their opposites

Front 4

congruent

Back 4

describes figures that have the same shape and size

Front 5

difference

Back 5

the answer to a subtraction

Front 6

irrational number

Back 6

real numbers that cannot be expressed as fraction, terminating decimals, or repeating decimals

Front 7

natural numbers

Back 7

all counting numbers

Front 8

Back 8

this property states that the power of a power can be found by multiplying the exponents

Front 9

Back 9

this property states that to multiply powers have the same base, add the exponents

Front 10

pythagorean theorem

Back 10

Front 11

Back 11

this property states that to divide powers have the same base, subtract the exponents

Front 12

radical

Back 12

the symbol used to represent the square root of a number

Front 13

rational number

Back 13

any real number that can be written as a fraction

Front 14

repeating decimal

Back 14

a decimal in which a digit or a sequence of digits keeps repeating

Front 15

inverse operations

Back 15

operations that undo each other

Front 16

scientific notation

Back 16

a method of writing numbers as the product of two factors where the first factor is a number greater than or equal to 1 but less than 10 and the second factor is a power of 10

Front 17

slope intercept form

Back 17

y = mx + b

Front 18

linear relationship

Back 18

a function that forms a straight line when graphed

Front 19

slope formula

Back 19

Front 20

terminating decimal

Back 20

all decimals that end

Front 21

volume of a cone

Back 21

Front 22

volume of a cylinder

Back 22

Front 23

nonlinear relationship

Back 23

a function or relationship between two variables that do not form a straight line when graphed

Front 24

origin

Back 24

the point named by (0,0) on a coordinate grid

Front 25

volume of a sphere

Back 25

Front 26

probability

Back 26

the chance that an event will occur measured by (number of favorable outcomes divided by number of possible outcomes)

Front 27

product

Back 27

the answer in a multiplication problem

Front 28

proportion

Back 28

an equation stating that two ratios are equivalent

Front 29

quotient

Back 29

the answer to a division problem

Front 30

range

Back 30

the difference between the greatest and least numbers in a data set

Front 31

rate

Back 31

a ratio that compares measurements or amounts

Front 32

ratio

Back 32

a comparison of two quantities

Front 33

scale drawing

Back 33

a representation of an actual object that is proportional to the actual object

Front 34

similar

Back 34

describes figures that have the same shape but may have different sizes

Front 35

whole numbers

Back 35

set of all counting numbers plus zero

Front 36

sum

Back 36

the answer to an addition problem

Front 37

Back 37

this property states that any number raised to the zer power will always be one provided the base is not zero

Front 38

dilation

Back 38

a change in size of a figure without changing its angles

Front 39

distributive property

Back 39

a number outside the parenthesis can be multiplied to each term within the parenthesis

Front 40

x-axis

Back 40

the horizontal axis of a graph

Front 41

y-axis

Back 41

the vertical axis of a graph

Front 42

adjacent angles

Back 42

two angles that have the same vertex and a common ray, but no interior points in common

Front 43

alternate exterior angles

Back 43

nonadjacent exterior angles found on opposite sides of the transversal

Front 44

alternate interior angles

Back 44

two angles that are on opposite sides of a transversal and between the two parallel lines

Front 45

constant correlation

Back 45

on a scatterplot, the value of x increases, but the value of y does not change

Front 46

corresponding angles

Back 46

two angles that are in the same position in congruent or similar figures

Front 47

domain

Back 47

the set of all first members of a function

Front 48

function

Back 48

"x" cannot repeat itself

Front 49

hypotenuse

Back 49

the side opposite the right angle in a right triangle (longest side)

Front 50

interior angles

Back 50

angles that lie inside of lines cut by a transversal

Front 51

intersecting lines

Back 51

lines or line segments

Front 52

leg

Back 52

either of the two sides that form the right angle of a right triangle (two shortest sides)

Front 53

line graph

Back 53

a graph that uses a line to show how something changes over time

Front 54

line of best fit

Back 54

a line that can be drawn between two points on a scatterplot to determine a trend

Front 55

line segment

Back 55

a part of a line with two endpoints

Front 56

linear equation

Back 56

an equation that can be represented as a straight line on a graph

Front 57

linear function

Back 57

a function that can be represented as a straight line on a graph

Front 58

midpoint

Back 58

the point that divides a line segment into two congruent line segments

Front 59

negative correlation

Back 59

on a scatterplot, as the value of x increases, the value of y decreases

Front 60

negative slope

Back 60

a slope, less than 0, of a line that tilts downward from left to right

Front 61

no correlation

Back 61

on a scatterplot, no relation exists between the x- and y- values

Front 62

nonlinear function

Back 62

a function whose graph is not a straight line

Front 63

nonrepeating/nonterminating decimals

Back 63

decimals that continue on infinitely without repeating; they represent irrational numbers

Front 64

opposites

Back 64

numbers that are the same distance from 0 but on different sides of the number line

Front 65

parallel lines

Back 65

lines or line segments that do not meet or cross and remain the same distance apart

Front 66

positive correlation

Back 66

on a scatterplot, as the value of x increases, the value of y increases

Front 67

probability

Back 67

the chance that an event will occur

Front 68

real numbers

Back 68

the set of rational and irrational numbers

Front 69

right triangle

Back 69

a triangle with one right angle

Front 70

scatterplot

Back 70

a graph that shows the relationship between two quantities

Front 71

slope

Back 71

a number that shows how much a line tilts

Front 72

standard form

Back 72

a linear equation in the form Ax + By = C

Front 73

straight angle

Back 73

an angle that measures 180 degrees

Front 74

system of linear equations

Back 74

two or more equations I two or more variables considered together

Front 75

transversal

Back 75

a line that cuts through other lines

Front 76

undefined slope

Back 76

a term that means no slope exists; it applies to a vertical line

Front 77

unit price

Back 77

the cost of a single item or cost per unit of measurement

Front 78

unit rate

Back 78

a rate in which the second measurement or amount is 1 unit

Front 79

vertex

Back 79

the point where the rays meet in an angle or where 3 or more edges meet in a solid figure

Front 80

vertical angles

Back 80

two nonadjacent angles formed by two intersecting lines

Front 81

x-intercept

Back 81

the point where a line crosses the x-axis

Front 82

y-intercept

Back 82

the point where a line crosses the y

Front 83

rotation

Back 83

a transformation of a figure by turining it about a point or axis

Front 84

transformation

Back 84

a change in the size, shape, or position of a figure

Front 85

translation

Back 85

a transformation in which every point in a figure is moved in the same direction and by the same distance

Front 86

reflections

Back 86

a flip of a flat figure across a line that creates a mirror image

Front 87

x-intercept

Back 87

the value of x at the point where a line or graph intersects the x-axis (the value of y is zero at this point)

Front 88

y-intercept

Back 88

the value of y at the point where a line or graph intersects the y-axis (the value of x is zero at this point)