GCSE Secondary Maths Age 13-17 - Geometry & Measures: Equation of a straight line - Explained

The video tutorial explains how to determine if two lines are parallel by comparing their gradients. It starts with the equations of two lines, L1 and L2, and explains the concept of parallel lines having the same gradient. The tutorial then demonstrates how to find the gradient of L1 directly from its equation and how to rearrange the equation of L2 to find its gradient. Both lines are shown to have a gradient of 3, confirming they are parallel. The video concludes with a discussion on the marking scheme for the problem.

What is the equation of the line L1?

How do you determine if two lines are parallel?

What is the gradient of line L1?

Explain the process of finding the gradient of line L2.

What conclusion can you draw about the gradients of lines L1 and L2?