20 terms

Absolute value

The distance between a number and zero on the number line. The symbol for absolute value is shown in the equation |−8| = 8.

Cartesian Coordinate Plane

A plane containing two perpendicular axes (x and y) intersecting at a point called origin (0, 0).

Coordinates

An ordered pair, (𝑥, 𝑦), that locates a point in a plane.

Distance

Amount of separation between 2 points.

Inequality

Any mathematical sentence that contains the symbols > (greater than), < (less than), < (less than or equal to), or > (greater than or equal to).

Integers

The set of whole numbers and their opposites {... − 3, −2, −1, 0, 1, 2, 3, ... }

Magnitude

Greatness in size or amount •

Negative numbers

The set of numbers with a value less than zero

Opposite number

Two different numbers that have the same absolute value. Example: 4 and −4 are opposite numbers because both have an absolute value of 4. They are the same distance from zero, in opposite directions.

Ordered Pair

A pair of numbers,(𝑥, 𝑦), that indicate the position of a point on the Cartesian coordinate Plane.

Origin

The point of intersection of the vertical and horizontal axes of a Cartesian coordinate plane. The coordinates of the origin are (0, 0).

Polygon

A closed figure formed by three or more line segments. •

Quadrant

One of the four regions on a Coordinate plane formed by the intersection of the x-axis and the y-axis.

Rational number

The set of numbers that can be written in the form 𝑎 𝑏 where a and b are integers and 𝑏 ≠ 0.

Sign

A symbol that indicates whether a number is positive or negative. Example: in −4, the (−) sign hows this number is read "negative four".

x axis

The horizontal number line on the Cartesian coordinate plane.

x coordinate

The first number of in ordered pair; the position of a point relative to the vertical axis

y axis

The vertical number line on the Cartesian coordinate plane

y coordinate

The second number in an ordered pair; the position of a point relative to the horizontal axis

Positive number

The set of numbers whose value is greater than zero.