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# Unit 2

### Linear Equations

TermDefinition
coefficient the number in front of a variable (multiplying the variable)
constant a fixed value, or a number on it own
inequality a relation between two expressions that are not equal to one another
variable a symbol, such as x, used to represent an unknown value
expression a mathematical phrase that can contain numbers, variables and operation signs: does not have an equal sign
term a constant or a variable in an expression; separated by + and - sign
like terms must have both the same base (or variable) and the same exponent (or power)
inverse operations opposite, reverse operations
equation a mathematical statement containing an equals sign, to show that two expressions are equal
operator a symbol indicating what operation must be done
less than < , fewer than, smaller than, below, under
greater than >, above, over, more than, bigger than
Less than or equal to ≤, at most, maximum, not greater than, no more than
greater than or equal to ≥, at least, minimum, no less than, no fewer than
Created by: krempinm
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