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Algebra The branch of mathematics that deals with relationships between numbers, utilizing letters and other symbols to represent specific sets of numbers, or to describe a pattern of relationships between numbers.
Coefficient A number multiplied by a variable. The “2” in 2x.
Domain The set of x-coordinates of the set of points on a graph; the set of x-coordinates of a given set of ordered pairs. The value that is the input in a function or relation.
Equation A number sentence that contains an equals symbol.
Expression A mathematical phrase involving at least one variable and sometimes numbers and operation symbols. No equals symbol.
Function A rule of matching elements of two sets of numbers in which an input value from the first set has only one output value in the second set. One input yields only ONE output. Vertical line test.
Inequality Any mathematical sentence that contains the symbols > (greater than), < (less than), < (less than or equal to), or > (greater than or equal to).
Ordered Pair A pair of numbers, (x, y), that indicate the position of a point on a Cartesian plane.
Perimeter The sum of the lengths of the sides of a polygon.
Pythagorean Theorem It is a theorem that states a relationship that exists in any right triangle. If the lengths of the legs in the right triangle are a and b and the length of the hypotenuse is c, we can write the theorem as the following equation
Range The y-coordinates of the set of points on a graph. Also, the y-coordinates of a given set of ordered pairs. The range is the output in a function or a relation.
Substitution To replace one element of a mathematical equation or expression with another.
Variable A letter or symbol used to represent a number.
Created by: Deigh