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ZERO SLOPE: A horizontal line in which the numerical value of the slope, calculated as the change in the variable on the vertical axis divided by a change in the variable on the horizontal axis, is zero. In other words, the Y-axis variable is fixed, or constant, for any and all values of the X-axis variable.

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MARGINAL PROPENSITY TO CONSUME

The proportion of each additional dollar of household income that is used for consumption expenditures. The marginal propensity to consume (abbreviated MPC) is another term for the slope of the consumption line and is calculated as the change in consumption divided by the change in income. The MPC plays a central role in Keynesian economics. It quantifies the consumption-income relation and the fundamental psychological law. It is also a foundation for the slope of the aggregate expenditures line and is critical to the multiplier process. A related consumption measure is the average propensity to consume.

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Today, you are likely to spend a great deal of time visiting every yard sale in a 30-mile radius hoping to buy either a birthday greeting card for your aunt or a wall poster commemorating the moon landing. Be on the lookout for the happiest person in the room.
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Before 1933, the U.S. dime was legal as payment only in transactions of $10 or less.
"He who has begun has half done. Dare to be wise ‚ begin! "

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