# In the rectangular coordinate system, the vertical number line is called the__?

A rectangular system can be one-dimensional, 2 dimensional or even 3 dimensional, also.

## Answer: In the rectangular coordinate system the vertical number line is called the y-axis.

Let's go through the explanation to understand better.

**Explanation:**

A Cartesian plane is defined with the help of two perpendicular number lines: the x-axis, which is horizontal, and the y-axis, which is vertical. The cartesian plane can exist in all directions and up to any length. The coordinate point (x, y) on the Cartesian plane tells us that the horizontal distance of the point from the origin is x, and the vertical distance is y.

Let us consider the plotting of coordinates (1, 4)

In order to plot the point (1, 4) :

- First, identify the abscissa (x-value) and ordinate (y-value) from the given ordered pair. Here, Abscissa is 2 and ordinate is 3.
- Next, plot the x-coordinate “1” on the x-axis. Plot the number, and move 1 unit from the origin to the right, as its value of x is positive.
- Next, plot the y-coordinate “4” on the y-axis. Plot the number, and move 4 units from the origin to the upon the y-axis, as it takes the positive value.

Finally, point (1, 4) is searched on the first quadrant of the cartesian plane.