The linear demand curve is represented by the equation A) P=Q - aP B) Q=a - bP C) Q=a - bP² D) Q = AP^-^b

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The linear demand curve is represented by the equation Q=a - bP, where Q is quantity demanded, P is price, a is the intercept and b is the slope. This equation shows an inverse relationship between price and quantity demanded, which is a characteristic of a demand curve. Option A represents a linear supply curve, while options C and D have additional variables that are not common in a simple linear demand curve.

The Linear Demand Curve Is Represented by the Equation