Math Vocabulary By: Keydron Stuckey May 19, st Period Mrs. Bishop

Integer one of the positive or negative numbers 1, 2, 3, etc., or zero. Compare whole number.

Rational Number a number that can be expressed exactly by a ratio of two integers.

Scientific Notation a method for expressing a given quantity as a number having significant digits necessary for a specified degree of accuracy, multiplied by 10 to the appropriate power, as written as × 103.

Perfect Square A number whose square root is an integer. For example, 4 is a perfect square because its square root is the integer 2.

Irrational Number A number that cannot be expressed as a fraction. Examples include some square roots such as 21/2 and 31/2, and numbers such as symbol π (the ratio of the circumference of a circle to its diameter).

Real Numbers All the numbers that includes all rational and irrational numbers.

Density Property The property that states that there always exists another rational number between any two given rational numbers. This means that the set of rational numbers is dense.

Adjacent Angles Two angles that share the same vertex and have one side in common between them.

Coefficient Mathematics. a number or quantity placed (generally) before and multiplying another quantity, as 3 in the expression 3x. expression

Distance Formula 1. distance(between two points) The length of the shortest path from one point to another. distance formula (of two points) The distance between two points (x 1, y 1 ) and (x 2, y 2 ) in the Cartesian coordinate system can be given by: [(x 1 - x 2 ) 2 + (y 1 - y 2 ) 2 ] 1/2

Domain The set of all possible input values for a function or relation.

Hypotenuse The side opposite the right angle in a right triangle.

Legs of a right Triangle Either of the sides in a right triangle opposite an acute angle. The legs are the two shorter sides of the triangle.sides right triangleacute angle

Range The difference between the maximum and minimum values in a set of data.

Slope Another name for gradient.

Prism A space figure with two parallel polygonal bases that are the same shape and the same size.

Scatterplot Data that is plotted as points on a graph to show a possible relationship between two sets of data.

Slope intercept form y = mx + b This is called the slope- intercept form because "m" is the slope and "b" gives the y-intercept. (For a review of how this equation is used for graphing, look at slope and graphing.)slopeinterceptslope and graphing