This means that on the scale drawing every metre of real life measurement is represented by a line of 1 centimetre. The side that is really \(24.9\,m\) long is drawn as \(24.9\,cm\) on the diagram.

Given the data shown in Figure 1, suppose we wanted to estimate a score for someone who had spent exactly 2.3 hours on an essay. I’m sure most of us have experience in drawing lines of best fit, where ...

If an equation can be rearranged into the form \(y = mx + c\), then its graph will be a straight line. In the above: \(x + y = 3\) can be rearranged as \(y = 3 - x\) (which can be re-written as ...