FTCE General Knowledge Math Practice Test

What identifies a specific point on a coordinate plane?

1. Angle

2. Coordinates

3. Vector

4. Dimension

The correct answer is: Coordinates

The correct answer, which identifies a specific point on a coordinate plane, is coordinates. In a two-dimensional coordinate system, a point is defined by an ordered pair of numbers, typically written as (x, y). Here, 'x' represents the horizontal position, while 'y' represents the vertical position. This unique pair of values determines the exact location of the point in relation to the axes on the coordinate plane, allowing for precise identification and plotting of points. The other options do not provide a specific identification of a point in the same way. Angles measure the space between two intersecting lines and do not indicate a location. Vectors represent both magnitude and direction but do not specify a single point without a defined origin. Dimensions refer to the measurable extents of an object, such as length, width, and height, but do not pertain to a point's exact location in a coordinate system. Therefore, coordinates are the essential tool used for pinpointing a location in Cartesian space.