Two points A(3, 4) and B(3, −4) are plotted. The line segment AB is:

Class 9Coordinate GeometryCoordinate Geometry

AVertical (parallel to the $y$ -axis)
BHorizontal (parallel to the $x$ -axis)
CPassing through the origin
DAlong the $x$ -axis

Step-by-Step Solution

A and B share the same

x

-coordinate (3), so AB is a vertical segment parallel to the

y

-axis.

Answer: A) Vertical (parallel to the

y

-axis)

Key idea: Plotting a point

To plot

(x, y)

:
1. Start at the origin.
2. Move

x

units along the

x

-axis (right if positive, left if negative).
3. Move

y

units along the

y

-axis (up if positive, down if negative).
4. Mark the point.

Example: (3, −2). From origin, 3 right, 2 down. Lands in quadrant IV.

**Coordinates are ordered**: (3, 2) and (2, 3) are different points.

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