Properties of Matter

In an experiment to determine the Young's modulus, steel wires of five different lengths $(1,2,3,4, and 5 \mathrm{~m}) but of same cross section \left(2 \mathrm{~mm}^{2}\right) were taken and curves between extension and load were obtained. The slope (extension/load) of the curves were plotted with the wire length and the following graph is obtained. If the Young's modulus of given steel wires is x \times 10^{11} \,\mathrm{Nm}^{-2}, then the value of x$ is __________.