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algebraic expression
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G6: Unit 3

Expressions & Equations

TermDefinition
algebraic expression an expression (math sentence) that contains at least one variable
braces Grouping symbols { } used in pairs to group things together.
brackets Grouping symbols [ ] used in pairs to group things together.
coefficient A number used to multiply a variable. Ex: 6x means 6 times x. x is the variable, so 6 is the coefficient.
constraint A restriction, limitation, or boundary that is placed upon variables used in equations that model real-world situations. Ex: x > c
dependent variable a variable whose value is determined by the value of the related independent variable.
determine Find the only possible answer
equation A mathematical sentence that shows that two expressions are equivalent. Ex: 7+2 = 10-1
evaluate to calculate the value of, to solve
exponent A mathematical notation indicating how many times the base is to be multiplied.
finite Not infinite. It has an end, or can be measured and given a value.
identify To find, determine, locate, notice or observe.
independent variable A variable in a mathematical equation whose value determines that of a dependent variable.
Inequalities a mathematical sentence involving <, >, or = plus < or >
order of operations the order in which operations in an expression to be evaluated are carried out. 1. grouping 2. exponents 3. multiplication and division 4. addition and subtraction
parentheses Grouping symbols ( ) used in pairs to group things together.
substitution The replacement of the letters in an algebraic expression with known values.
term In algebra, a term is either: a single number, or a variable, or numbers and variables multiplied together.
unknown Found in an expression or equation, it is the variable to be solved. The solution of the equation is the value of the unknown.
variable A letter that represents a number.
Created by: Mr. Shaun
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