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Higher - The gradients of two perpendicular lines will always multiply to make –1. Make sure you are familiar with finding the equation of a line and calculating gradient to understand equations of ...

Some important points to revise from the chapter are: • An equation of the form ax + by + c = 0, where a, b and c are real numbers, such that a and b are not both zero, is called a linear equation in ...

CBSE Class 10 Pair of Linear Equations in Two Variables Notes: Class 10 Chapter 3 Pair of Linear Equations in Two Variables revision notes have been provided to you in this article. These short notes ...