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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.