Class IX · Chapter 4 · NCERT Mathematics

CHAPTER 04

Linear Equations in Two Variables

Lines Across the Plane

One equation, infinitely many solutions — every point on the line is an answer.

\(ax + by + c = 0, a²+b² ≠ 0\)
4 CBSE Marks
Difficulty
8 Topics
Medium Board Weight

Topics Covered

8 key topics in this chapter

Linear Equation: ax+by+c=0
Solution of a Linear Equation
Graph of a Linear Equation
Lines Parallel to Axes
Equations of x-axis and y-axis
Every Linear Eq. has Infinite Solutions
Point-slope Representation
Word Problems → Linear Equations

Study Resources

📚
ACADEMIA AETERNUM तमसो मा ज्योतिर्गमय · Est. 2025
Sharing this chapter
Class 9 Linear Equations in Two Variables NCERT
Class 9 Linear Equations in Two Variables NCERT — Complete Notes & Solutions · academia-aeternum.com
🎓 Class 9 📐 Mathematics 📖 NCERT ✅ Free Access 🏆 CBSE · JEE
Share on
academia-aeternum.com/class-9/mathematics/linear-equations-in-two-variables/ Copy link
💡
Exam tip: Sharing chapter notes with your study group creates a reinforcement loop. Teaching a concept is the fastest path to mastering it.

Get in Touch

Let's Connect

Questions, feedback, or suggestions?
We'd love to hear from you.