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TLC math 7th grade vocab ch. 1-5
math vocab lists 1-5
Terms in this set (84)
a letter that is used to represent one or more numbers
the number represented by variables
a collection of numbers, variables and operation
evaluating the expressions
to find the value of an expressioin by replacing each variable by a number
writing the units of each variable in a real life problem to help determine the units for the answer
an expression that uses words to represent real life situations
the results of repeated multiplcations
the number or variable that represents the number of times the base is used as a factor
the number or variable that is used as a factor in repeated multiplication
symbols suchs a () or  that indicate the order of operations should be perormed
order of operation
the rules established to evaluate an expressions involving more than one operation
a statement formed when an equal sign is placed between 2 expressions
an equation that contains one or more variables
solution of an equation
number that, when substituted for the variable in an equation, results in a true statement
solving an equation
finding all solutions of an equations
a sentence formed when an inequality symbol is placed between 2 expressions
solution of an inequality
number that, when substituted for the variable in an inequality, results in a true statement
writing algebric expressions, equations, or inequalities that represent real ife situations
expressions, equations, or inequalities that represent real life situations
information, facts, or numbers used to describe something
a graph that organizes a collection of data by using horizontal or vertical bar to display how many times each event can occur in a collection
a graph that uses line segments to connect data points. it is especially useful for showing changes in data
a rule that establishes a relationship between 2 quantities called input and output for each input there is an output
Real number line
a line that pictures real number as points
set of number consisting of the positive, negative number, and zero.
the point labeled zero on a number line
any of the numbers less than zero
any of the number greater than zero
any of the numbers ...-3,-2,-1,0,1,2,3...
Graph of a number
the point that corresponds to a number
Plotting a point
drawing a point on a number line that corresponds to a number
2 points on number lines that are the same distance from the origin but are on opposite sides of it
the distance between the origin and the point representing the real number. The symbol [a] represents the _______ of a
the speed and direction in which an object is traveling (up is positive, down is negative). The speed of an object is the absolute value of its _____
an example used to show that a given statement is false.
a rectangular arrangement of numbers in to a horizontal rows and vertical columns.
Entry or element
each number in the matrix
the product of "a "and (b + c):a(b+c)= ab +ac or (b+c)a =ba+ca
The product of "a" and (b-c) : a(b-c) =ab-ac or (b-c) a = ba-ca
a number multiplied by a variable in a term. The number is a ______ of the variable.
that have the same variable raise to the same power.
terms with no variable factors.
an expression is _______it has no examples of grouping and if the all the like terms have been combined
if a/b is a nonzero number, than its ____is b/a. The product of a number and its ______ is 1.
Terms of an expression
the parts that are added in an expression. For example, in the expression 5-x, the terms are 5, and -x.
equations with the same solutions as the original equation
Operations that undo each other, such addition and subtraction, multiplication and division
The result of applying a transformation to an equation when solving an equation
Linear equation of one variable
in one variable-an equation in which the variable is raised to its first power and does not occur in a denominator, inside a square root symbol, or inside an absolute value sign.
Property of equality
the rules in algebra used to transform equation into an equivalent equation.
Ratio of A to B
the relationship a/b of 2 quantities A and B that are measured in the same unit
- two triangles are _______ if they have equal corresponding angle. It could be shown that that this is equivalent to the ratio of the lengths of the corresponding of the side being equal.
an equation that is true for all values of the variables.
the error produced when a decimal result is rounded in order to provide a meaningful answer.
algebraic equation that relate 2 or more real life quantities
Rate of A per B
the relationship a/b of 2 quantities A and B are measured in different units.
a rate per one given unit
a way to name a function that is define by an equation, for an equation for x and y the symbol f(x) replaces y and read as f of x
The number of units a non vertical line rises or falls for each unit of horizontal change from left to right.
Constant of variation
the ____________model. represented by the variable k
Slope intercept form
a linear equation written in the form y = mx+b
the vertical axis
the horizontal axis
Graph of a Function
the set of all points (x, f(x,)), where is x is in the domain
a plane formed by 2 real number line that intersect at a right angle
a pair of numbers used to identify a point a plane
the first number is an ordered pair,
second number in a ordered pair.
1 of 4 parts in to which the axis divide a coordinate plane.
Graph of an ordered pair
the point that corresponds to its ordered pair
a graph of pairs of number that represent real life situations the way to analyze relationship between 2 quantities.
the x coordinate of a point where a graph crosses the x-axis
the y coordinates of a point where a graph crosses the y axis.
Rate of Change
a comparison of two difference quantities that are changing. Slope provides and important way of visualizing a ___________
the relationship of two variable x and y if there is a non 0 number k such that y =kx, or y/x=k
2 different lines that do not insect and are in the same planes
any set of ordered pairs. (x,y)
- a linear equation written in form y=mx+b. The slope of line is m. The y-intercept is b.
a line that fits the data points on a scatter plot
When the points on a scatter plot can be approximated by a line with a positive slope
the equation when a non- vertical line y-yI=m (x-xI) that passes through the given points (xi,yI) with the slope of m
a linear equation of the form ax+by=c where a,b,c are real numbers and a and b are not both zero
a method of estimating the coordinates of a point that lies between two given data points.
a method of estimating the coordinates of a point that lies to the right or left or all of the given data points.
When the points on a scatter plot can be approximated by a line with a negative slope
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