EP ECONOMICS,AP EDITION-CONNECT ACCESS
EP ECONOMICS,AP EDITION-CONNECT ACCESS
20th Edition
ISBN: 9780021403455
Author: McConnell
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Chapter 1.A, Problem 8AP
To determine

Calculation of slope.

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Suppose that when the interest rate on loans is 16 percent, businesses find it unprofitable to invest in machinery and equipment. However, when the interest rate is 14 percent, $5 billion worth of investment is profitable. At 12 percent interest, a total of $10 billion of investment is profitable. Similarly, total investment increases by $5 billion for each successive 2-percentagepoint decline in the interest rate. Describe the relevant relationship between the interest rate and investment in a table, on a graph, and as an equation. Put the interest rate on the vertical axis and investment on the horizontal axis. In your equation use the form i = a + bI, where i is the interest rate, a is the vertical intercept, b is the slope of the line (which is negative),and I is the level of investment.
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