Capture relationships between data sets by graphing linear equations in Microsoft Excel 2007. Linear equations allow you to predict values within your data set and view the overall trend.

A linear equation is represented as a line graph. In order to draw the line graph we require several pairs of coordinates. These coordinates represent the relationship given in the equation.

It can even do simple linear equations, provided the x you’re solving for is italicized so the app doesn’t confuse it with the x multiplication symbol.

It can take in arithmetic, fractions, powers and roots, and simple linear equations. In our tests, it works incredibly well is surprisingly snappy with it's response. An Android version is in the ...

Solving equations with light. (Courtesy: iStockphoto/Henrik Jonsson) 3x + y = 2. x + 3y = 0. It’s the sort of easy maths problem that you can work out in a few minutes using pencil and paper, but ...