Which term is the vertical axis on a coordinate plane?

Which term is the vertical axis on a coordinate plane?

• A. Y-axis
• B. X-axis
• C. Percent
• D. Mode

Answer: (A)

On a coordinate plane, two directions show how to locate points: horizontal and vertical. The vertical direction is labeled with y-values and is called the Y-axis. The horizontal direction is the X-axis. Coordinates are read as (x, y): you move left or right along the X-axis to the x-position, then move up or down along the Y-axis to reach the y-position. The origin is where they meet, at (0, 0). Positive y-values go up, negative y-values go down. Terms like percent or mode belong to statistics, not to the axes, so they don’t describe the vertical direction.

On a coordinate plane, two directions show how to locate points: horizontal and vertical. The vertical direction is labeled with y-values and is called the Y-axis. The horizontal direction is the X-axis. Coordinates are read as (x, y): you move left or right along the X-axis to the x-position, then move up or down along the Y-axis to reach the y-position. The origin is where they meet, at (0, 0). Positive y-values go up, negative y-values go down. Terms like percent or mode belong to statistics, not to the axes, so they don’t describe the vertical direction.