Class 8 Maths – Chapter 15: Introduction to Graphs
Step 5: Reading Information from Graphs
1️⃣ What Does Reading a Graph Mean?
Reading a graph means understanding the information shown by points, lines, or bars on a graph.
2️⃣ Things to Observe Carefully
- Title of the graph
- X-axis (horizontal line)
- Y-axis (vertical line)
- Scale used on both axes
- Points or lines drawn
3️⃣ How to Read a Point on a Graph
- Locate the point on the graph.
- Move vertically down to the X-axis → get x-value.
- Move horizontally to the Y-axis → get y-value.
- Write the coordinates as (x, y).
4️⃣ Example
If a point lies at x = 4 and y = 6, then the coordinate is:
(4, 6)
5️⃣ Reading Line Graphs
- Each point shows a value at a given time.
- Upward line → increase
- Downward line → decrease
- Straight line → constant value
6️⃣ Daily Life Examples
- Distance–Time graph
- Temperature–Day graph
- Marks–Students graph
📌 Exam Tips
- Always check the scale.
- Read values carefully from axes.
- Write answers with proper units.
Easy Memory Trick:
👉 “Down for X, Side for Y”
📘 Class 8 Mathematics – Complete Library
CBSE | NCERT | State Syllabus
Chapter 1: Rational Numbers
Chapter 2: Linear Equations in One Variable
Chapter 3: Understanding Quadrilaterals
Chapter 4: Practical Geometry
Chapter 5: Data Handling
Chapter 6: Squares and Square Roots
Chapter 7: Cubes and Cube Roots
- NCERT Notes
- MCQs
- Worksheet
- Worksheet Answers
- Mind Map & Easy Tricks
- Important Exam Questions
- Very Important Questions
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