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VERTICAL ADDITION: In graphical analysis, the technique of combining two curves by adding the value of the variable on the vertical or Y axis for a given value of the variable on the horizontal or X axis. This is commonly used for deriving the demand curve for a public good from a set of individual demand curves. The demand price that each individual buyer is willing to pay is added for a given quantity to identify the total benefits obtained.

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FOUR-SECTOR AGGREGATE EXPENDITURES LINE

A graphical depiction of the relation between aggregate expenditures by the four macroeconomic sectors (household, business, government, and foreign) and the level of aggregate income or production. The four-sector aggregate expenditures line combines consumption expenditures, investment expenditures, government purchases, and net exports. The slope of this aggregate expenditures line is based on the marginal propensity to consume, adjusted for marginal propensities of the other expenditures that are assumed to be induced when constructing the line. This is one of three aggregate expenditures lines based on the number of sectors included. The others are the two-sector aggregate expenditures line and the three-sector aggregate expenditures line.

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Today, you are likely to spend a great deal of time looking for a downtown retail store hoping to buy either a dozen high trajectory optic orange golf balls or a large red and white striped beach towel. Be on the lookout for high interest rates.
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The New York Stock Exchange was established by a group of investors in New York City in 1817 under a buttonwood tree at the end of a little road named Wall Street.
"Opportunities are usually disguised as hard work, so most people don't recognize them."

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