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Math Vocab 2.1-2.6
Algebra Math vocabulary from section 2.1-2.6
14
Mathematics
8th Grade
09/24/2009

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Term
Contradiction
Definition
An equation that is not true for any value of the variable. example: 0=3 or 1=3
Term
Conversion Factor
Definition
A rate in which the 2 quantities are equal but use different units. example: 12 inches/1 foot
Term
Cross Products
Definition
In a proportion, the 2 diagonal numbers. example: in 2/3=4/6 the cross products are 3 & 4 and 2 & 6
Term
Equation
Definition
Mathematical statement that 2 expressions are equal.
Term
Formula
Definition
An equation that states a rule for a relationship among quantities.
Term
Identity
Definition
An equation that is true for all values of the variable. example: 3=3 or 1=1
Term
Literal Equation
Definition
An equation with two or more variables.
Term
Proportion
Definition
A statement that 2 ratios are equivalent. example: 1/12=2/24
Term
Rate
Definition
A ratio of 2 quantities with different units. example: 34 miles/2 gallons
Term
Ratio
Definition
A comparison of 2 quantities by division. example: a/b; a to b; or a:b
Term
Scale
Definition
A ratio between 2 sets of measurements. example: 1 in: 5 mi
Term
Scale Drawing/ Scale Model
Definition
Used to represent an object as smaller or larger then the actual object. example: a map
Term
Solution of an Equation
Definition
A value of the variable that makes the equation true.
Term
Unit Rate
Definition
A rate with a second quantity of of 1 unit. example: 17 miles/1 gallon
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