2019-10-26T13:17:38+03:00[Europe/Moscow] en true variable, coefficient, algebraic expression, constant, evaluate, substitute, equation, solve, solution, inverse operation, isolate the variable, Addition Property of Equality, Subtraction Property of Equality, Multiplication Property of Equality, Division Property of Equality, inequality, algebraic inequality, solution of an inequality, solution set, term, like term, equivalent expression, simplify, ordered pair, coordinate plane, x-axis, y-axis, x-coordinate, y-coordinate, origin, graph of an equation, integers, opposites, absolute value, power, exponential form, exponent, base, scientific notation, rational number, relatively prime, reciprocal, least common denominator (LCD), principal square root, perfect square, irrational number, real number, Density Property, population, sample, biased sample, random sample, systematic sample, stratified sample, stem-and-leaf plot, back-to-back stem-and-leaf plot, mean, median, mode, outlier, variability, range, quartile, box-and-whisker plot, bar graph, frequency table, histogram, line graph, scatter plot, correlatoin, line of best fit, point, line, plane, segment, ray, angle, right angle, acute angle, obtuse angle, complementary angles, supplementary angles, vertical angles, congruent, parallel lines, perpendicular lines, transversal, Triangle Sum Theorem, acute triangle, right triangle, obtuse triangle, equilateral triangle, isosceles triangle, scalene triangle, polygon, regular polygon, trapezoid, parallelogram, rectangle, rhombus flashcards
Pre-Algebra Vocabulary - Full Course # Pre-Algebra Vocabulary - Full Course

• variable
a symbol used to represent a quantity that can change
• coefficient
the number that is multiplied by the variable in an algebraic expression
• algebraic expression
an expression that contains at least on variable
• constant
a value that does not change
• evaluate
to find the value of a numerical or algebraic expression
• substitute
to replace a variable with a number or another expression in an algebraic expression
• equation
a mathematical sentence that shows that two expressions are equivalent
• solve
to find an answer or a solution
• solution
a value or values that make an equation true
• inverse operation
operations that undo each other: addition and subtraction, or multiplication and division
• isolate the variable
to get a variable alone on one side of an equation or inequality in order to solve the equation or inequality
the property that states that if you add the same number to both sides of an equation, the new equation will have the same solution
• Subtraction Property of Equality
the property that states that if you subtract the same number from both sides of an equation, the new equation will have the same solution
• Multiplication Property of Equality
the property that states that if you multiply both sides of an equation by the same number, the new equation will have the same solution
• Division Property of Equality
the property that states that if you divide both sides of an equation by the same nonzero number, the new equation will have the same solution
• inequality
a mathematical sentence that shows the relationship between quantities that are not equivalent
• algebraic inequality
an inequality that contains at least on variable
• solution of an inequality
a value to values that make an inequality true
• solution set
the set of values that make a statement true
• term
the parts of an expression that are added or subtracted
• like term
two or more terms that have the same variable raised to the same power
• equivalent expression
equivalent expressions have the same value for all values of the variables
• simplify
to write a fraction or expression in simplest form
• ordered pair
a pair of numbers that can be used to locate a point on a coordinate plane
• coordinate plane
a plane formed by the intersection of a horizontal number line called the x-axis and a vertical number line called the y-axis
• x-axis
the horizontal axis on a coordinate plane
• y-axis
the vertical axis on a coordinate plane
• x-coordinate
the first number in an ordered pair; it tells the distance to move right or left from the origin
• y-coordinate
the second number in an ordered pair; it tells the distance to move up or down from the origin
• origin
the point where the x-axis and y-axis intersect on the coordinate plane; (0,0)
• graph of an equation
a graph of the set of ordered pairs that are solutions of the equation
• integers
the set of whole numbers and their opposites
• opposites
two numbers that are an equal distance from zero on a number line (additive inverse)
• absolute value
the distance of a number from zero on a number line; shown by | |
• power
a number produced by raising a base to an exponenet
• exponential form
a number is in exponential form when it is written with a base and an exponent
• exponent
the number that indicates how many times the base is used as a factor
• base
when a number is raised to a power, the number that is used as a factor is the base
• scientific notation
a method of writing very large or very small numbers by using power of 10
• rational number
any number that can be expressed as a ratio of two integers
• relatively prime
two numbers are relatively prime if their greatest common factor (GCF) is 1
• reciprocal
one of two numbers whose product is 1; also called multiplicative inverse
• least common denominator (LCD)
the least common multiple of two or more denominators
• principal square root
the nonnegative square root of a number
• perfect square
a square of a whole number
• irrational number
a number that cannot be expressed as a ratio of two integers or as a repeating or terminating decimal
• real number
a rational or irrational number
• Density Property
the property that states that between any two real numbers, there is always another real number
• population
the entire group of objects or individuals considered for a survey
• sample
a part of the population
• biased sample
a sample that does not fairly represent the population
• random sample
a sample in which each individual or object in the entire population has an equal chance of being selected
• systematic sample
a sample of a population that has been selected using a pattern
• stratified sample
a sample of a population that has been divided into subgroups
• stem-and-leaf plot
a graph used to organize and display data so that the frequencies can be compared
• back-to-back stem-and-leaf plot
a stem-and-leaf plot that compares two sets of data by displaying one set of data to the left of the stem and the other to the right
• mean
the sum of a set of data divided by the number of items in the data set; average
• median
the middle number, or the mean (average) of the two middle numbers, in an ordered set of data
• mode
the number or numbers that occur most frequently in a set of data; when all numbers occur with the same frequency, we say there is no mode
• outlier
a value much greater or much less than the others in a data set
• variability
the spread of values in a set of data
• range
the difference between the greatest and least values in a data set
• quartile
three values, one of which is the median, that divide a data set into fourths
• box-and-whisker plot
a graph that displays the highest and lowest quarters of data as whiskers, the middle two quarters of the data as a box, and the median
• bar graph
a graph that uses vertical or horizontal bars to display data
• frequency table
a table that lists items together according to the number of times, or frequency, that the items occur
• histogram
a bar graph that shows the frequency of data within equal intervals
• line graph
a graph that uses line segments to show how data changes
• scatter plot
a graph with points plotted to show a possible relationship between two sets of data
• correlatoin
the description of the relationship between two data sets
• line of best fit
a straight line that comes closet to the points on a scatter plot
• point
an exact location in space
• line
a straight path that extends without end in opposite directions
• plane
a flat surface that extends forever
• segment
a part of a line between two endpoints
• ray
a part of a line that starts at one endpoint and extends forever
• angle
a figure formed by two rays with a common endpoint called the vertex
• right angle
an angle that measures 90 degrees
• acute angle
an angle that measures less than 90 degrees
• obtuse angle
an angle whose measure is greater than 90 degrees but less than 180 degrees
• complementary angles
two angles whose measures add to 90 degrees
• supplementary angles
two angle whose measures have a sum of 180 degrees
• vertical angles
a pair of opposite congruent angles formed by intersecting lines
• congruent
having the same size and shape
• parallel lines
lines in a plane that do not intersect
• perpendicular lines
lines that intersect to form right angles
• transversal
a line that intersects two or more lines
• Triangle Sum Theorem
the theorem that states that the measures of the angles in a triangle add up to 180 degrees
• acute triangle
a triangle with all angles measuring less than 90 degrees
• right triangle
a triangle containing a right angle
• obtuse triangle
a triangle containing one obtuse angle
• equilateral triangle
a triangle with three congruent sides
• isosceles triangle
a triangle with at least two congruent sides
• scalene triangle
a triangle with no congruent sides
• polygon
a closed plan figure formed by three or more line segments that intersect only at their endpoints
• regular polygon
a polygon with congruent sides and angles
• trapezoid
a quadrilateral with exactly one pair of parallel sides
• parallelogram
a quadrilateral with two pairs of parallel sides
• rectangle
a parallelogram with four right angles
• rhombus
a parallelogram with all sides congruent