Python allows free creation of plots, unlike expensive, stagnant graphing calculators. Import NumPy and Matplotlib for basic ...

Save guides, add subjects and pick up where you left off with your BBC account. Plot points with coordinates where \(x\) and \(y\) are equal. Three points are sufficient, but more can be plotted.

To help draw a straight line graph ... the 𝑥 term, is the gradient or slope of the line. The constant, 𝑐, is the 𝑦-intercept. This is the value where the line crosses the 𝑦-axis.