There are several basic facts and equations connected with straight lines that you need to know by heart. We can calculate the gradient of the line above by selecting two coordinate points that ...

Just two points are needed to draw a straight line graph, although it is a good idea to do a check with another point once you have drawn the graph. Draw the graph of \(y = 3x - 1\). If you ...

The landscape changes as lines take shape to form simple geometric designs: trapezoids, straight lines ... What purpose could they have served? Were aliens involved? The lines are found in ...