Which axis could be described as the vertical dimension on a coordinate plane?

Which axis could be described as the vertical dimension on a coordinate plane?

• A. Y axis
• B. Origin
• C. X axis
• D. Z axis

Answer: (A)

In a coordinate plane, the vertical dimension is described by the axis that runs up and down. That axis is the Y axis, which carries the y-coordinates and tells how far a point is above or below the origin. For example, a point written as (x, y) uses the x value for horizontal position and the y value for vertical position. The origin is just the intersection point (0, 0) of the axes, not an axis itself. The Z axis belongs to three-dimensional space and represents depth, not vertical movement on a 2D plane. So the vertical dimension is defined by the Y axis.

In a coordinate plane, the vertical dimension is described by the axis that runs up and down. That axis is the Y axis, which carries the y-coordinates and tells how far a point is above or below the origin. For example, a point written as (x, y) uses the x value for horizontal position and the y value for vertical position. The origin is just the intersection point (0, 0) of the axes, not an axis itself. The Z axis belongs to three-dimensional space and represents depth, not vertical movement on a 2D plane. So the vertical dimension is defined by the Y axis.