Additive Identity - 0, since 0 added to any number gives that number. ( a + 0 = a)

Algebraic Expressions -variables and numbers connected by mathematical operations.

Bar graph -a 2-dimensional picture that consists of individual rectangles(or bars).

Base -the quantity being raised to a power.

Binomial -a polynomial with exactly two terms.

Coefficient -the number mulitiplied by a variable.

Complementary angles -two angles whose sum is 90 degrees.

Constant-a number that does not change value.

Degree of a term(in one variable) -the exponent.

Degree of a polynomia l-the greatest degree of any term of the polynomial.

Difference of two Squares -a polynomial where the two terms are perfect squares separated by subtraction.

Equivalent equations -two equations that have the same solution.

Exponent -the number of times the base is used as a factor.

Exponential expression -a term that includes a coefficient, a variable, and a power of that variable.

Exponential Notation -an expression that includes a quantity being raised to a power.

Equations -a statement that two expressions are equal.

Factor -in a product, each number being multiplied is called a factor.

Factoring by grouping -when four or more terms are given in a polynomial try working with two terms at a time and then find the GCF.

Factoring a polynomial -the process of writing a polynomial as a product.

Formula -a mathematical statement that describles the relationship among numbers or variables.

Graph of a linear equation - a 2-dimensional representation which results in a staight line.

Greatest common factor -(GCF) the product of the largest numerical factor common to all terms and the variable factor  raised to the lowest exponent in all terms.

Grouping Symbol -parentheses, brackets, or braces used to collect mathematical expressions.

Hypotenuse -the side opposite the right angle of a triangle.

Identity -an equation that has an infinite number of solutions.

Inequality symbo -any of the following symbols used to denote the relationship between two mathematical statements < , >, < , >.

Integers -    {..., -2, -1, 0, 1, 2, 3,...}

Irrational Numbers - nonrational numbers

Least common denominator - (LCD) a polynomial whose factors include all the factors of the denominators, each raised to the highest power from any of the given denominators.

Leg -the sides adjacent to the right angle of a triangle.

Like terms -terms that have the same variable raised to the same power (also called similar terms).

Line graph -a 2-dimensional picture that consists of points connected by a line.

Linear equation - in one variable can be written in the form Ax + B = C where A, B, and C are real numbers and A 0.

Linear equation in two variables - can be written in the form Ax + By = C where A, B, and C are real numbers and A 0 and B 0.

Monomia l -a polynomial with exactly one term.

Multiplicative Identity - the identity is 1. (a ·1 = a)

Natural Numbers    {1, 2, 3, ...}

Opposites -two quantities whose sum is 0 (also called additive inverses). Perfect Square Trinomial-a polynomial of three terms that factors into the same two binomials.

Ordered Pair - written (x,y), the x represents a value on the horizontal axis and the y represents a value on the vertical axis, while (x,y) represents a point on the graph.

Origin - the ordered pair (0,0).

Parallel lines - two lines with the same slope.

Perpendicular lines - two lines that intersect at right angles.

Perfect Square Trinomial - a polynomial of three terms that factors into the same two binomials.

Polynomial in x -a finite sum of terms of the form axⁿ , where a is a real number and n is a whole number.

Power -the number of times a base is used as a factor. Also called an exponent.

Prime -a polynomial that does not factor.

Quadrant - one of the four sections where the horizontal and vertical number lines divide the plane.

Quadratic equation -an equation that can be written in the form ax² + bx + c = 0 where a, b, and c are real numbers and a 0.

Rational Expression - a quotient of polynomials.

Rational Numbers - {  l a and b are integers and b 0 }

Real Numbers -  Numbers that correspond to points on the number line. This includes all natural, whole, integers, rational, and irrational numbers.

Reciprocals -two numbers whose product is 1 (also called multiplicative inverses).

Rectangular coordinate system - a 2-dimensional graph that includes a horizontal and vertical number line.

Right triangle - a three sided polygon that contains a 90 degree angle.

Scientific notation - if a number is written as the product of a number a, where 1 < a < 10, and an integer power r of 10: a x 10^r .

Set -a collection of objects.

Slope - the steepness of a line.

Slope-intercept form - a linear equation written in the form y = mx + b.

Solution -the value of the variable or variables that makes the equation true.

Standard form of a linear equation - the form Ax + By = C where A, B, and C are real numbers and A 0 and B 0.

Standard Form of a quadratic equation -the form ax² + bx + c = 0 where a, b, and c are real numbers and a 0.

Supplementary angles -two angles whose sum is 180 degrees.

Term -a number or the product of a number and a variable (including exponents).

Translate -to change from written words to a mathematical statement.

Trinomial -a polynomial with exactly three terms.

Variable -letter used to denote an unknown quantity.

Whole Numbers - {0, 1, 2, 3,...}

x-axis - the horizontal number line.

x-coordinate - the x value in the ordered pair (x,y).

x-intercept - a point on the x-axis (a,0).

y-axis - the vertical number line.

y-coordinate - the y value in the ordered pair (x,y).

y-intercept - a point on the y-axis (0,b).