Save guides, add subjects and pick up where you left off with your BBC account. If an equation can be rearranged into the form \(y = mx + c\), then its graph will be a straight line. In the above: \(x ...

Figure 1a. Graph for y = 3x + 4. Figure 1b. Graph for y = 2x 2 - 3x + 4.. Figure 1c. Graph for y = 0.6x 3 + 2x 2 - 3x + 4.. In school I also had the x- and y-axes represent something, such as age ...

This is the graph of \(y = 3x - 1\). Sketching straight line graphs If you recognise that the equation is that of a straight line graph, then it is not actually necessary to create a table of values.