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