\(Gradient = \frac{y_{1} - y_{0}}{x_{1} - x_{0}}\)

Line passing through \((0, 0)\) & \((1\frac{1}{4}, 2\frac{1}{2})\),

\(Gradient = \frac{2\frac{1}{2} - 0}{1\frac{1}{4} - 0} = \frac{\frac{5}{2}}{\frac{5}{4}} \)

= 2.