Algebra Definitions: Part 7

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This is Math Made Easy's 7th part of our important Algeba definitions.



Need help with algebra? You are not alone! Algebra is one of the most difficult subjects for many students, even those who are normally high achievers. But here's some good news: once a student becomes familiar with the special "language" of algebra, it can become one of the easiest, and even most enjoyable, things for them to do!

Algebra is based on a special kind of logic--once it clicks in students' heads, it becomes easy to apply to any type of problem. The trouble is, some students learn best at different paces, and in different environments, than others. For many, a 45-minute classroom session, surrounded by the distractions of their peers, is simply not the ideal way to learn.

open half-plane: Either of the two regions into which a boundary  line separates the coordinate plane.

open sentence:  A sentence containing one or more variables.

opposite of a number: Each of the numbers in a pair such as 6 and �6 or �2.5 and 2.5. Also called additive inverse.

ordered pair:  A pair of numbers for which the order of the numbers is important; (2, -3) is an ordered pair.

ordinate:  The second coordinate in an ordered pair of numbers associated with a point in a coordinate plane. Also called y-coordinate.

origin: The zero point on a number line. The intersection of the axes on a coordinate plane.

parabola: The graph of f(x) = ax2 + bx + c, where the domain is the set of real numbers and a cannot equal 0.

parallel lines: Lines in the same plane that do not intersect; nonvertical lines that have the same slope.

percent: Another way of saying hundredths, or divided by 100. Usually denoted by the symbol %.

perfect square: An expression such as x2 , (x + 1)2, or (5x � 3)2.

perfect square trinomial: An expression with three terms that is the square of a binomial.

perimeter: The perimeter of a plane figure is the distance around it.

periodic decimal:  See nonterminating decimal.

perpendicular lines:  Any two lines that intersect to form right angles.

plot a point:  Locate the graph of an ordered pair of real numbers in a coordinate plane.

polynomial: A sum of monomials.

polynomial equation:  An equation whose sides are both polynomials.

How many of  of these terms do you know? These are all important conepts in Algebra.


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