Graphs: Finding the Point of Intersection between a Line and the X-axis

The video tutorial explains how to find the point where a line perpendicular to another crosses the X-axis. It starts by introducing the problem and the equations of the lines involved. The tutorial then details the calculation of the gradient for the perpendicular line using a specific formula. It proceeds to find the Y-intercept by substituting known coordinates into the equation. The tutorial includes a visualization of the line on a graph and concludes by solving for the X-axis intersection point. Finally, it outlines the marking scheme for the problem.

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