Page 220 - Mathematics GRADE 9, DE-STREAMED (MTH1W)

quotient
The result of a division.
rate
A comparison, or a type of ratio, of two measurements with different units; for example, 100 km/h, 10 kg/m3, 20 L/100 km. See also ratio.
rate of change
The change in one variable relative to the change in another. The slope of a line represents a constant rate of change. See also slope.
ratio
A comparison of quantities with the same units. A ratio can be expressed in ratio form or in fraction form, for example, 3:4 or 34.
rational number
A number that can be expressed as a quotient of two integers where the divisor is not zero. It can also be represented as a decimal number that either repeats or terminates. For example, 1 or 0.3333..., 17 or
1.7, 3 or 1, and −1 or −0.25 are rational numbers. See also fraction, quotient. 34
real number
A rational or irrational number. See also rational number, irrational number.
reflection
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A transformation that flips points over a line, such as the x-axis or y-axis, such that the reflected point and the original point are the same distance perpendicularly from the line of reflection.
regression
A statistical method for determining the relationship between the dependent variable and the independent variable for a set of data.
relation
An identified relationship between two variables that may be expressed as a table of values, a graph, or an equation.
rotation
A transformation that turns a set of points about a fixed point, such as the origin on a Cartesian plane, usually involving rotations that are multiples of 90 degrees. See also transformation.
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