Coordinate Graphing

A coordinate plane is a two-dimensional surface formed by the intersection of a horizontal line (x-axis) and a vertical line (y-axis).

The four quadrants are: Quadrant I (x > 0, y > 0), Quadrant II (x < 0, y > 0), Quadrant III (x < 0, y < 0), Quadrant IV (x > 0, y < 0).

An ordered pair (x, y) represents a specific point on the coordinate plane, where 'x' is the horizontal position and 'y' is the vertical position.

To identify the quadrant of a point (x, y), check the signs of x and y: Quadrant I (both positive), Quadrant II (x negative, y positive), Quadrant III (both negative), Quadrant IV (x positive, y negative).

The x-axis is the horizontal line on a coordinate plane where the y-coordinate is zero.

The y-axis is the vertical line on a coordinate plane where the x-coordinate is zero.

The origin is the point (0, 0) where the x-axis and y-axis intersect.

To plot a point (x, y), start at the origin, move 'x' units along the x-axis, and then 'y' units up or down along the y-axis.

The first number in an ordered pair is called the x-coordinate.

The second number in an ordered pair is called the y-coordinate.