Draw the graph of \(x = 3\). Mark some points on a grid which have an \(x\)-coordinate of 3, such as (3, 0), (3, 1), (3, -2). The points lie on the vertical line \(x = 3\). If you recognise that ...

So plot a point, based on the values 5 and 8. Drawing a straight line through it from the origin, creates the graph. The origin is 0, 0 because 0 miles travelled is also 0 kilometres travelled.

You can change the line style and line width of the precedence connections ... break due to a holiday */ * draw the Logic Gantt chart; proc gantt data=widgela holidata=holidays; chart / ...