Graphical Representation of the Aggregate Demand Function
The aggregate demand function can be visualized by plotting it on a graph with aggregate output (Y) on the horizontal axis. This is done by adding the constant value of exogenous investment (I) to the consumption function at every level of income. Because investment is assumed to be independent of output, this addition results in a simple parallel upward shift of the consumption line. The resulting aggregate demand curve has a vertical intercept equal to autonomous demand () and a slope equal to the marginal propensity to consume ().
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Introduction to Macroeconomics Course
Ch.3 Aggregate demand and the multiplier model - The Economy 2.0 Macroeconomics @ CORE Econ
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Graphical Representation of the Aggregate Demand Function
Autonomous Demand
In a simplified economic model, total planned spending (aggregate demand, AD) is the sum of consumption (C) and planned investment (I). If the consumption function is given by the equation C = 250 + 0.6Y, where Y is income, and planned investment is fixed at a value of 150, which of the following equations correctly represents the aggregate demand function for this economy?
Analyzing Components of Aggregate Demand
Calculating Total Planned Spending
Consider an economy where total planned spending is the sum of consumption and planned investment. If the consumption behavior is described by a standard linear function dependent on income, and planned investment is a fixed amount, a decrease in this fixed amount of investment will cause the total planned spending function to shift upwards for any given level of income.
In a simplified economic model where total planned spending is the sum of consumption and a fixed amount of investment, the resulting aggregate demand (AD) function is given by the equation: . Match each component from the equation to its correct economic description.
Deconstructing the Aggregate Demand Equation
Comparing Economic Behavior via Aggregate Demand Functions
In a simplified economy, total planned spending (aggregate demand, AD) is the sum of consumption (C) and planned investment (I). The aggregate demand function is given by the equation AD = 500 + 0.75Y, where Y is income. If planned investment is a fixed amount of 200, which of the following equations correctly represents the consumption function for this economy?
Critique of the Simplified Aggregate Demand Model
In a simplified economy where total planned spending is the sum of consumption and planned investment, the consumption function is given by C = 100 + 0.8Y and planned investment (I) is a fixed amount of 50. If the current level of income (Y) is 1,000, the portion of total planned spending that is induced by income is ____.
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Vertical Intercept of the Aggregate Demand Curve
Slope of the Aggregate Demand Curve in the Simplified Model
In an economy, total planned spending is the sum of consumption and a fixed amount of planned investment. If business leaders become more pessimistic about the future and consequently reduce their planned investment spending, how would this change be depicted on a graph with total planned spending on the vertical axis and aggregate output on the horizontal axis?
Deriving the Aggregate Demand Curve's Properties
Evaluating an Economic Claim with a Graph
In an economic model, total planned spending is the sum of consumption and planned investment. Consumption spending is known to increase as total income rises. Initially, planned investment is assumed to be a fixed amount that does not change with income. If this assumption is changed so that planned investment also increases as total income rises, how would the graphical representation of the total planned spending curve be affected?
In a simple economic model, total planned spending (AD) is given by the equation AD = 150 + 0.6Y + 250, where Y is aggregate output. Match each conceptual component of this model's graphical representation with its correct numerical value or description.
On a graph with total planned spending on the vertical axis and aggregate output on the horizontal axis, the line representing the consumption function and the line representing total planned spending (aggregate demand) will have different slopes because planned investment is included in aggregate demand.
Interpreting the Aggregate Demand Graph
An economist wants to draw the aggregate demand curve for a simple economy on a graph with aggregate output on the horizontal axis. They start with a pre-existing line representing the consumption function and are given a single, constant value for planned investment. Arrange the following steps in the correct logical sequence to accurately construct the aggregate demand curve.
In a simple economic model, the consumption function is represented by a line with a slope of 0.75. If a constant level of planned investment is added to this consumption function to derive the total planned spending (aggregate demand) curve, the slope of the resulting aggregate demand curve will be ____.
Graphical Analysis of an Economy's Planned Spending
Axes and Properties of the Aggregate Demand Graph (Figure 3.12)