Page 215 - Mathematics GRADE 9, DE-STREAMED (MTH1W)

exponent
The value in a power defining the operation on the base. For example, the exponent 3, in the power 53, defines that three 5s are multiplied together. See also base, power.
exponential decay
A decrease in a quantity over time, in which the quantity is diminished by a consistent fraction or percentage over a period of time. For example, when quantity n decreases by half, the exponential decay can be written as n × 0.5, n × 0.5 × 0.5, n × 0.5 × 0.5 × 0.5, n × 0.5 × 0.5 × 0.5 × 0.5, ... to show the initial value of n being halved in each time period. See also exponential growth.
exponential growth
An increase in a quantity over time, in which the quantity is increased by a consistent multiple over a period of time. For example, when quantity n doubles, the exponential growth can be written as n × 2, n × 2 × 2, n × 2 × 2 × 2, n × 2 × 2 × 2 × 2, ... to show the initial value of n being doubled in each time period. See also exponential decay.
expression
A numeric or algebraic representation of a quantity. An expression may include numbers, variables, and operations; for example, 3 + 7, 2x – 1. See also algebraic expression.
fraction
A number in the form ab, in which the numerator a and the denominator b are integers and b ≠ 0. For example, 1, 17, 3, and −1 are all fractions. See also rational number.
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generalize
To make a statement that is consistent with all specific instances.
geometric property
An attribute that remains the same for a class of objects or shapes. For example, an attribute for any parallelogram is that its opposite sides are of equal length.
growing pattern
A pattern that involves an increase from term to term. A growing pattern that has a constant increase from term to term, such as 3, 7, 11, 15, ... , is an example of a linear growing pattern. A growing pattern that does not have a constant increase from term to term, such as 3, 6, 12, 21, ... is an example of a non- linear growing pattern. See also shrinking pattern.
income
Money that an individual receives in exchange for work or from investments. See also earning.
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