ABSTRACT
Plot a graph with velocity vertical and time horizontal. Determine from the graph (a) the gradient, (b) the vertical axis intercept, (c) the equation of the graph, (d) the velocity after 12.5 s, and (e) the time when the velocity is 18 m/s. (9)
5. The following experimental values of x and y are believed to be related by the law y = ax2 + b, where a and b are constants. By plotting a suitable graph verify this law and find the approximate values of a and b.
