Unit 6- Coordinate Plane Terminology – Flashcards

The perpendicular bisector of the segment joining every point and its reflection image The line of reflection can be the horizontal axis, the vertical axis, or any specified line across which a figure is reflected.

When identifying the location of a point on a coordinate plane, an x-coordinate is given first, followed by the y-coordinate. This forms the ordered pair (x, y), which exactly locates a point.

The origin is the point at which the perpendicular axes intersect on a coordinate system. In a flat, two-dimensional plane, the coordinates of the origin are (0, 0) where the horizontal x-axis intersects the vertical y-axis.

Two perpendicular number lines intersect each other at the origin and divide the coordinate plane into four regions. Each of these regions is called a quadrant. A point's location along each number line determines its location within a quadrant, and hence the signs (positive or negative) of the point's coordinates.

The y-axis is one of the two number lines in the coordinate plane. It is the vertical axis. The coordinate on the y-axis is called the y-coordinate and indicates the number of units from zero on the y-axis.