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# Algebra Glossary - R a|b|c|d|e|f|g|h|i|l|m|n|o|p|q|r|s|t|u|v|w|x|y|z

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# rational number:

A number that can be expressed as the quotient of two integers.

# rationalizing the denominator:

The process of changing an irrational denominator to a rational one.

# real numbers:

The set of all rational and irrational numbers.

# reciprocals:

Pairs of real numbers that have the product 1. Also known as mulliplicarive inverses.

# regression line:

A fitted line determined by a specific algebraic technique.

# relation:

A set of ordered pairs.

# repeating decimal:

A decimal in which a digit or a group of digits repeats forever, e.g. 0.66666 ... or 0.846846846 ... .

# repetend:

The portion of a repeating decimal that repeats.

# restrictions:

The set of possible values for the variables for which an expression is real, or for which it is defined.

# resultant:

The sum of two vector.

# row matrix:

A matrix with one row.

Note: The terms in this collection may not be entirely accurate.
They are for reference only.