Module 4 Vocabulary
 Constant – a value that does not change
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Constant of proportionality – a constant ratio of two variables related to proportionality
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Conversion factor – a number used to change one set of units to another, by multiplying or dividing
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Ratio – a comparison of two quantities by division
 Equivalent ratios – ratios that name the same comparison
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Percent – a ratio comparing a number to 100
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Rate – a ratio that compares two quantities measured in different units
 Unit rate – a rate in which the second quantity in the comparison is one unit
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Rate of change – a rate that describes how one quantity changes in relation to another quantity
 Proportion – statement that two rates or ratios are equivalent
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Proportional relationship – a relationship between two quantities in which the ratio of one quantity to the other quantity is constant
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Complex fraction – a fraction that contains one or more fractions in the numerator, the denominator, or both

Constant
Constant of proportionality
Conversion factor
Ratio
Equivalent ratios
Percent
Rate
Unit rate
Rate of change
Proportion
Proportional relationship
Complex fraction a value that does not change a constant ratio of two variables related to proportionality
a number used to change one set of units to another, by multiplying or dividing a comparison of two quantities by division ratios that name the same comparison a ratio comparing a number to 100 a ratio that compares two quantities measured in different units a rate in which the second quantity in the comparison is one unit a rate that describes how one quantity changes in relation to another quantity statement that two rates or ratios are equivalent a relationship between two quantities in which the ratio of one quantity to the other quantity is constant a fraction that contains one or more fractions in the numerator, the denominator, or both