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Coordinate Geometry

Punjab Board · Class 9 · Mathematics

Complete topic list for Coordinate Geometry in Punjab Board Class 9 Mathematics. Key concepts, sub-topics, and what to focus on for board exams.

45 questions25 flashcards5 concepts

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4 Topics · Punjab Board Class 9 Mathematics

Topics in Coordinate Geometry

1

The Cartesian Plane – Building the Framework

  • Two perpendicular number lines are drawn on a plane – one horizontal and one vertical.
  • The horizontal line is called the x-axis (also written as X'X).
  • The vertical line is called the y-axis (also written as Y'Y).
2

Coordinates of a Point – Abscissa and Ordinate

  • Every point in the Cartesian plane is described by an ordered pair of numbers (x, y) called its coordinates.
  • The x-coordinate (abscissa) is the perpendicular distance of the point from the y-axis, measured along the x-axis.
  • The y-coordinate (ordinate) is the perpendicular distance of the point from the x-axis, measured along the y-axis.
3

Signs of Coordinates in Different Quadrants

  • Quadrant I: Both x and y are positive → (+, +). Example: (3, 5)
  • Quadrant II: x is negative, y is positive → (−, +). Example: (−4, 2)
  • Quadrant III: Both x and y are negative → (−, −). Example: (−3, −7)
4

Plotting Points on the Cartesian Plane – Step-by-Step

  • Step 1: Draw the x-axis (horizontal) and y-axis (vertical) intersecting at origin O.
  • Step 2: Mark equal units on both axes.
  • Step 3: To plot point (a, b) – start at origin, move 'a' units along x-axis (right if positive, left if negative).

Key Concepts

The Cartesian system consists of twoThe XEvery point on the coordinate planeThe two axes divide the coordinateSpecial cases arise when points lie

Frequently Asked Questions

What are the important topics in Coordinate Geometry for Punjab Board Class 9 Mathematics?
Key topics in Coordinate Geometry include Coordinate Geometry – Complete Chapter Mind Map, This flowchart shows why one piece of information is insufficient to locate a point, but two pieces of information uniquely determine its location., Mind map showing the components and structure of the Cartesian coordinate system.. These are the concepts Punjab Board Class 9 examiners draw on most — study them first, then practise related questions.
How to score full marks in Coordinate Geometry — Punjab Board Class 9 Mathematics?
Understand the core concepts first, then work through the 45 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

More resources for Coordinate Geometry

All 5 chapters — Punjab Board Class 9 Mathematics Syllabus

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