(Requires Appendix material)Show that the two alternative formulae for the slope given in your textbook are identical. 
Definitions:
Market Forces
The economic factors affecting the price, demand, and availability of goods and services within a free market, such as competition, supply, and demand.
Environmental Problems
Issues caused by human activities and natural processes leading to the degradation of the Earth's natural environment.
Multinational Mobilization
The organization and movement of resources, including human and logistical support, across national boundaries to achieve specific objectives.
Social Scare
A phenomenon where a society experiences widespread fear or panic over an issue perceived as a threat to social stability.
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