A line graph is used to spot trends in data over ... The scale is going up in increments of 10. Between each multiple of 10 is ten subdivisions. Each subdivision is worth 1 TWh (Terawatt hour).

The equation of a straight line on a graph is made up of a \(y\) term, an \(x\) term and a number, and can be written in the form of \(y = mx + c\). For a line with equation \({y}={2}{x}+{ ...