Co-ordinate Geometry — Chapter Summary
Maharashtra Board · Class 9 · Mathematics
Summary of Co-ordinate Geometry for Maharashtra Board Class 9 Mathematics. Part of the Maharashtra Board Class 9 Mathematics syllabus.
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Overview
Co-ordinate Geometry is a branch of mathematics that combines algebra and geometry to describe the position of points in a plane using numbers. Just like how we need two pieces of information to locate Dattabhau's flat (second floor and third window from left), we need two numbers called coordinates
Key Concepts
A system created by René Descartes
A system created by René Descartes consisting of two perpendicular number lines - the horizontal X-axis and vertical Y-axis - intersecting at the orig
Every point in a plane can
Every point in a plane can be represented by an ordered pair (x,y) where x is the distance from Y-axis (x-coordinate) and y is the distance from X-axi
Quadrant I
Quadrant I: (+,+), Quadrant II: (-,+), Quadrant III: (-,-), Quadrant IV: (+,-). Points on axes are not included in any quadrant.
Lines parallel to X
Lines parallel to X-axis have equation y = b (constant y-coordinate) and lines parallel to Y-axis have equation x = a (constant x-coordinate). The X-a
Learning Objectives
- Understand the concept of coordinate system with X-axis, Y-axis, origin, and quadrants
- Learn to read and write coordinates of points in a plane
- Master the skill of plotting points given their coordinates
- Identify and draw lines parallel to X-axis and Y-axis
- Understand and write equations of lines parallel to the axes
Frequently Asked Questions
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Sources & Official References
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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