Any straight line graph has a constant gradient, which is calculated by the change in 𝑦 divided by the change in 𝑥, along any section of the graph. The gradient is measuring the steepness of the ...

The Cartesian plane is divided into four quadrants by the two axes, the x-axis and the y-axis. A point in the Cartesian plane has an x and a y coordinate, which determine its position completely. The ...

THE substance of this volume has formed the material of a course of lectures delivered for some years past to undergraduates in Glasgow. Its object is to provide the student, whose bent is towards ...