Example 7 - Chapter 3 Class 10 Pair of Linear Equations in Two Variables
Last updated at Dec. 13, 2024 by Teachoo
Examples
Example 1
Important
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Chapter 3 Class 10 Pair of Linear Equations in Two Variables
Serial order wise
- Ex 3.1
- Ex 3.2
- Ex 3.3
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Examples
- Case Based Questions (MCQ)
- MCQs from NCERT Exemplar
- Graph of pair of Linear Equations
- Cross Multiplication Method
- Equations reduced to pair of linear equations
- Important Linear Equation Questions
- Teachoo Questions - MCQs
- Teachoo Questions - Mix
- Teachoo Questions - Assertion Reasoning
- Teachoo Questions - Case Based
Transcript
Example 7 Two rails are represented by the equations x + 2y – 4 = 0 and 2x + 4y – 12 = 0. Will the rails cross each other? Given equations are x + 2y = 4 2x + 4y = 12 We need to check if the rails cross each other i.e. if both equations form a unique solution From (1) x + 2y – 4 = 0 x = 4 – 2y Substitute the value of x in equation (2) 2x + 4y – 12 = 0 2 (4 – 2y) + 4y – 12 = 0 8 – 4y + 4y – 12 = 0 −4 = 0 Which is not correct Thus, The Given equations do not have a solution So , the two rails will not cross each other.
