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# bauer/joint vocab 1

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TermDefinition
similar figures same shape but different sizes; corresponding sides are in proportion
scale factor the ration of any 2 corresponding lengths in 2 similar figures
unit rate a rate with a denominator of 1
slope the rate of change between any two points on a line; the steepness of a line; rise over run
ratio a way to compare quantities using division
rate of change a rate that describes how one quantity changes in relation to another; usually a unit rate
rate a ratio of 2 quantities having different kinds of units; example miles per hour
proportion an equation stating 2 ratios or rates are equivalent
constant rate of change the rate of change in a linear relationship
nonproportional the relationship between two quantities that do not have a constant ratio
equivalent ratios two ratios that have the same value
proportional two quantities that have a constant ratio
direct variation the relationship between two variable quantities that have a constant ratio; another term for proportional
constant of variation also known as the constant of proportionality
constant of proportionality a constant ratio or unit rate of two quantities that are proportional
complex fractions fractions with a numerator that is a fraction, a denominator that is a fraction, or both that are fractions
unit price divide the price by the unit of measure (the quantity)