Chapter 5 Vocabulary

Front

Constant

Back

A value that does not change; also referred to as Constant of Proportionality.

Front

Constant of Proportionality

Back

A constant ratio of two variables related proportionally that can be represented through an equation (y=kx), a table, or a graph.

Front

Conversion Factor

Back

A fraction used in unit conversion in which the numerator and denominator represent the same amount, but are in different units. For example, 12 in / 1 ft.

Front

Equivalent Ratios

Back

Fractions or ratios that name the same amount or part.

Front

Proportion

Back

An equation that states that two ratios are equivalent.

Front

Proportional Relationship

Back

A relationship between two quantities in which the ratio of one quantity to the other quantity is constant. Proportional relationships can be represented in equations (y=kx), tables, or graphs. For a graph to be proportional, it must have a straight line that passes through the origin.

Front

Rate / Rate of Change

Back

A ratio that compares two quantities measured in different units.

Front

Ratio

Back

A comparison of two quantities by division.

Front

Scale

Back

A ratio that compares the measurements of a drawing or model with the actual measurements.

Front

Scale Drawing

Back

A proportional, two-dimensional drawing of an object; a blueprint or map.