Watch this video to learn about the equation of a straight line. Since we are given 2 points that already lie on the line, using the formula as before, we need to calculate the gradient first.

Melting and freezing are both physical changes, which are often easy to reverse. To reverse this process, the water would need to be cooled enough until it freezes back into ice. This works because ...

Wrestling with Word’s equation editor can be frustrating, but it doesn’t have to be. A few simple tricks can make typing and formatting math equations a breeze—no more clunky menus or endless ...