A Linear Demand Curve Diagram is a diagram that shows how an object or person is shown from youngest to oldest or tallest to shortest
Example of a Linear Demand Curve
Along a linear demand curve elasticity varies from point to point of the demand curve with respect to different price, but slope is constant
Is negatively sloped linear curve
explain why the price elasticity of demand varies along a demand curve, even if the demand curve is linear.
on the linear demand curve, demand is elastic at price above the point of unitary elasticity so a price increase will decrease the total revenue.
Example of a Linear Demand Curve
Along a linear demand curve elasticity varies from point to point of the demand curve with respect to different price, but slope is constant
Is negatively sloped linear curve
explain why the price elasticity of demand varies along a demand curve, even if the demand curve is linear.
on the linear demand curve, demand is elastic at price above the point of unitary elasticity so a price increase will decrease the total revenue.
elastic
Unit elastic
I have never heard that the demand curve must be concave. In fact, it is most often modeled as either linear or convex. Common convex specifications include log-linear and constant-elasticity demand functions. A number of empirical papers attempt to estimate the shape of the demand curve for specific products but I am not familiar with anyone concluding that demand is concave generally.
Convex function on an open set has no more than one minimum. In demand it shows the elasticity is linear after some point and non linear on other points.
The intersection of a linear demand curve and a linear supply curve lies in the first quadrant because both price and quantity are non-negative in a typical market setting. The demand curve slopes downward, indicating that as price decreases, quantity demanded increases, while the supply curve slopes upward, showing that as price increases, quantity supplied also increases. The point where these two curves intersect represents the equilibrium price and quantity, both of which must be positive in a functioning market. Thus, this intersection is located in the first quadrant, where both axes are positive.
It isolates factors and only looks at one cause and effect at a time. This is why the demand curve is a linear equation (straight line). It wouldn't be possible in real life.
a linear curve does not represent x^2