Learn and revise how to plot coordinates and create straight line graphs to show the relationship between two variables with GCSE Bitesize Edexcel Maths.

The straight line through two points will have an equation in the form \(y = mx + c\). We can find the value of \(m\), the gradient of the line, by forming a right-angled triangle using the ...

This line will pass through the circle at a second point, and it turns out this other intersection also has to be a rational point. Some algebra will show us why. Since the line has slope 2 and y ...

The line of best fit is an output of regression analysis that represents the relationship between two or more variables in a dataset.