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# CC2 Ch. 4

TermDefinition
Algebraic Expression A combination of individual terms separated by plus or minus signs. It does not have an “equals” sign.
Associative Property If a sum contains terms that are grouped, then the sum may be regrouped with no effect on the total: a + (b +c) = (a + b) + c. If a product contains terms that are grouped, then the product may be regrouped with no effect on the result: a(bc) = (ab)c.
Combining Like Terms Simplifies an expression by summing constants and summing those variable terms in which the same variables are raised to the same power.
Commutative Property If two terms are added, then the order may be reversed with no effect on the total. That is, a + b = b + a . If two expressions are multiplied, then the order may be reversed with no effect on the result. That is, ab = ba .
Constant Term A number that is not multiplied by a variable.
Constant of Proportionality In a proportional relationship, equations are of the form y = kx, where k is the constant of proportionality.
Corresponding Parts Points, sides, edges, or angles in two or more figures that are images of each other with respect to a transformation. If two figures are congruent, then the corresponding parts of the figures are congruent to each other.
Distributive Property For any a, b, and c, a(b + c) = ab + ac .
Equivalent Expressions Two expressions that have the same value.
Evaluate To find the numerical value of. To do this, substitute the value(s) given for the variable(s) and perform the operations according to the order of operations.
Proportional Relationship If two values may be set up in a way that relates the values.
Scale Drawing A drawing that shows a real object with accurate sizes except they have all been reduced or enlarged by a certain amount called the scale factor.
Scale Factor A ratio that compares the sizes of the parts of one figure or object to the sizes of the corresponding parts of a similar figure or object. In this course it is also referred to as the multiplier.
Similar Figures Figures that have the same shape but are not necessarily the same size.
Simplify To write a less complicated expression with the same value. It has no parentheses and no like terms.
Terms A single number, variable, or the product of numbers and variables.
Unit Rate A rate with a denominator of one when simplified.
Variable A symbol used to represent one or more numbers. In this course, letters of the English alphabet are used.
Created by: EMarshall8