Algebra Definitions: Part 3

Math Made Easy has compiled a list of commonly used terms in Algebra.

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Below is the third part of our Algebra list of terms. See ho many you ae familiar with!!



degree: A unit of angle measurement.

degree of a monomial: The sum of the degrees of the variables in the monomial.

degree  of a polynomial:  The greatest of the degrees of its terms after it has been simplified.

degree of a variable in a monomial:  The number of times that the variable occurs as a factor in the monomial.

difference:  See subtraction.

direct variation:  A function defined by an equation of the form y=kx, where k is a nonzero constant. We say that y is directly proportional to x. (See also quadratic direct variation.)

discriminate:  For a quadratic equation in the form ax 2 + bx + c = 0, the value of b2 --4ac is called the discriminant.

disjoint sets:  Two sets that have no members in common.

disjunction:  A sentence formed by joining two open sentences by the word or.

distance formula:  For any points P 1(x 1, y1) and P 2(x2,y2 ), P 1 P 2= the square root
of (x 2 - x1)2 +(y 2 � y2)2.

divisible:  One polynomial is (evenly) divisible by another polynomial if the quotient is also a polynomial.

division:  For every real number a and every nonzero real number b, the quotient a divide b or
a/b, is defined by a divide b = a x 1/b.


domain of a variable:  The given set of numbers that the variable may represent.

empty set:  The set with no members; the null set.

endpoint:  The starting point of a ray.

equation:  A statement formed by placing an equals sign between two numerical or variable
expressions.


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