Mathematical Concepts

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Constant Rate of Change

Back

The ratio of the change in y-values to the change in x-values, represented by m in the equation y = mx+b; the constant rate of change can be calculated from a table or graph.

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Proportional

Back

Having an equivalent ratio.

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Unit Rate

Back

A comparison of two measures with one term having a value of 1; may also be called unit price or unit cost.

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Constant of Proportionality

Back

The constant ratio of x- and y-values in a proportional relationship; represented by the equation k = y/x, where k is the constant of proportionality.

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Per

Back

For each or for every.

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Ratio

Back

Comparison of two quantities.

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Dependent Quantity

Back

A quantity whose value is determined by the value of the related independent quantity. (y values)

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Independent Quantity

Back

A quantity whose value determines that of a dependent quantity (the x values).

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Constant

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A number that does not vary; for example, in the expression x + 5, 5 is the constant.

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Linear Relationship

Back

The relationship between independent and dependent quantities which shows a constant rate of change.