Definition: Coordinates are represented as ordered pairs (x,y), where x is the abscissa and y is the ordinate.

Example: Points are plotted using coordinates such as A(2,3), B(-4,-21), and P(8,4).

Highlight: When comparing numbers, positive numbers are always greater than their negative counterparts.

Vocabulary:

Quote: "When plotting coordinates, always write the abscissa (x-coordinate) first, followed by the ordinate (y-coordinate)."

Definition: Relative numbers include both positive and negative numbers, with zero as the reference point.

Example: Numbers like +16, +11 (positive) and -7, -11 (negative) are shown on the number line.

Highlight: Negative numbers are always less than zero, while positive numbers are greater than zero.

Vocabulary:

Example: Point E(-2,75) demonstrates how coordinates are plotted on a number line.