Practice30Create account

Which pair of points, when joined, gives a segment parallel to the -axis?

Class 9Coordinate GeometryCoordinate Geometry
  • A(−3, 7) and (6, 7)
  • B(2, 1) and (2, 9)
  • C(0, 0) and (4, 4)
  • D(1, 2) and (3, 5)

Step-by-Step Solution

A segment is parallel to the -axis when both endpoints have the same ordinate. Only (−3, 7) and (6, 7) share an ordinate; (2, 1) and (2, 9) share an abscissa and give a vertical segment instead.
Answer: A) (−3, 7) and (6, 7)

Key idea: The Cartesian plane

Two perpendicular axes — horizontal -axis) and vertical -axis) — meet at the **origin** (0, 0). Together they divide the plane into four **quadrants**:

- **I**: > 0 (top right)
- **II**: > 0 (top left)
- **III**: < 0 (bottom left)
- **IV**: < 0 (bottom right)

Points ON the axes don't belong to any quadrant. (a, 0) sits on the -axis; (0, b) sits on the -axis.

Master this chapter in 30 minutes a day.

Don't just memorise the answer — build a daily practice habit.

Practice 5 Similar Questions Free →

All Coordinate Geometry practice questions

More Class 9 Coordinate Geometry practice

Why do (−6, 2) and (2, −6) lie in different quadrants, even though they are built from…Point P is plotted on the Cartesian plane (each grid square is 1 unit). What are the…Four points A, B, C and D are plotted on the Cartesian plane. Which of them lies in…Six points A to F are plotted on the Cartesian plane. How many of them lie on the y-axis?Points P and Q are plotted on the Cartesian plane. What is the abscissa of P plus the…