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Ch.1 Vocab


Variable A letter used to represent one or more numbers
Values Numbers
Variable Expression A collection of #'s, variables, and operations.
Evaluating the Expression Replacing each variable in an expression with a number.
Unit Analysis Writing units of each variable in a real life problem, in order to determine units for the answer.
Variable Model Translation of words into math
Power An expression of a number by the exponent
Exponent Number of times a base is used as a factor
Base A number or variable used as a factor in repeated multiplication
Grouping Symbols Problems that have more than one operation, grouping helps indicate order of operation
Order of Operations Starts with first grouping symbols, evaluate the powers. Then do the multiplication and division. Lastly addition and subtraction.
Equation Formed with an equal sign. (=)
Open Sentence An equation that contains one or more variable
Solution of Equation A number that when substituted for the variable in an EQUATION, results in a TRUE statement
Solving the Equation Finding the solution of an equation.
Inequality A sentence formed when an inequality symbol is placed in the middle
Solution of Inequality A number that when substituted for the variable in an INEQUALITY, results in a TRUE statement
Modeling Writing algebraic expressions, equations, or inequalities that represent real life.
Mathematical Model An expression, equation or inequality that represents a real life situation.
Data Information, facts or numbers used to prove/describe a given statement is false.
Bar Graph A graph that organized a collection of data by using horizontal or vertical bars to ddisplay how many times each event or # occurs.
Line Graph A graph that uses a line segment to connect data points. It is useful for showing changes in data overtime.
Function A rule that established a relationship between two qualities (called input & output) For each input, there is exactly one output.
Input-Output Table A table used to describe a function by listing the inputs & outputs
Domain The collection of all INPUT values
Range The collection of all OUTPUT data
Output Y-Value (Range)
Input X-Value (Domain)
Created by: kwojtasinski