Form linear equations to calculate bill for consumption of electricity units between 1500 and 15000 units for all states and metro cities given in the last table. ​  

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Please find below the solution to the asked query:
$$\begin{gathered} \mathrm{Let} \mathrm{x} \mathrm{be} \mathrm{the} \mathrm{consumption} \mathrm{of} \mathrm{electricity} \mathrm{between} 1500 \mathrm{units} \mathrm{and} 15000 \mathrm{units} \mathrm{and} \\ \mathrm{y} \mathrm{be} \mathrm{the} \mathrm{total} \mathrm{electrical} \mathrm{charge} \mathrm{in} \mathrm{respective} \mathrm{states}. \mathrm{Then} \mathrm{as} \mathrm{per} \mathrm{the} \mathrm{traffic} \mathrm{slab} \mathrm{given}: \\ \mathrm{For} \mathrm{Delhi}, \mathrm{y}=8.13\times 1500+7.50\times \mathrm{x} \\ \mathrm{For} \mathrm{Mumbai}, \mathrm{y} = 6.95 \times 1500 + 8.81 \times \mathrm{x} \\ \mathrm{For} \mathrm{Kolkata}, \mathrm{y} = 6.20 \times 1500 + 7.95 \times \mathrm{x} \\ \mathrm{For} \mathrm{Chennai}, \mathrm{y} = 5.70 \times 1500 + 9.16 \times \mathrm{x} \end{gathered}$$

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