By definition, net exports from Japan are equal to exports from Japan minus imports into Japan. In a hypothetical two-country world, imports into Japan are equal to exports from the United States. So the value for net exports from Japan is equal to exports from Japan minus exports from the United States. Graphically, at each exchange rate, the value for net exports is the horizontal distance from U.S. exports to Japanese exports.

Brief Principles of Macroeconomics (MindTap Course List)
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Author:N. Gregory Mankiw
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Chapter14: A Macroeconomic Theory Of The Open Economy
Section: Chapter Questions
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18. Deriving net exports
By definition, net exports from Japan are equal to exports from Japan minus imports into Japan. In a hypothetical two-country world, imports into
Japan are equal to exports from the United States. So the value for net exports from Japan is equal to exports from Japan minus exports from the
United States. Graphically, at each exchange rate, the value for net exports is the horizontal distance from U.S. exports to Japanese exports.
Use the graph input tool to answer the following questions. You will not be graded on any changes you make to this graph. (Note: To avoid dealing
with decimal places, this calculator reports the price of yen in terms of dollars per 1,000 yen. That is, the price on the vertical axis is the dollar price of
a 1,000-yen note instead of a single yen. As you have already seen, a price of 8 dollars per 1,000 yen is the same as 125 yen per dollar. Once you
enter a value in a white field, the graph and any corresponding amounts in each grey field will change accordingly.)
20
18
16
14
B
10
2
6 8
EXCHANGE RATE (Dollars per 1,000 yen)
o
0
4
PRICE OF YEN (Dollars per 1,000 yen)
-8 -6 -4
16
14
12
Suppose that the price of yen is $4 per 1,000 yen. Net exports from Japan will be
10
Suppose that the price of yen is $6 per 1,000 yen. Net exports from Japan will be
8
6
4
2
Exports from U.S.
10
Exports from Japan
10 12 14 16
YEN (Trillion)
-2
0
Based on the data from the previous two parts of this problem, use the blue line (circle symbol) to plot net exports for Japan as a function of the price
of yen on the following graph. (Note: Select and drag the curve from the palette to the desired position on the graph.)
18 20
2 4 6
YEN (Trillion)
8
Graph Input Tool
10
Price
(Dollars per 1,000
yen)
12 14
Exports from Japan
(Trillion yen)
16
NX from Japan
(Trillion yen)
$2
NX from Japan
18
16
trillion yen.
trillion yen.
Exports from U.S.
(Trillion Yen)
2
The previous graph you constructed should show that net exports from Japan would be negative if the price of yen increased to a high enough level,
such as an amount greater than $10 per 1,000 yen. If you convert this price into the form typically quoted in the newspaper, this price corresponds to
yen per dollar.
Transcribed Image Text:18. Deriving net exports By definition, net exports from Japan are equal to exports from Japan minus imports into Japan. In a hypothetical two-country world, imports into Japan are equal to exports from the United States. So the value for net exports from Japan is equal to exports from Japan minus exports from the United States. Graphically, at each exchange rate, the value for net exports is the horizontal distance from U.S. exports to Japanese exports. Use the graph input tool to answer the following questions. You will not be graded on any changes you make to this graph. (Note: To avoid dealing with decimal places, this calculator reports the price of yen in terms of dollars per 1,000 yen. That is, the price on the vertical axis is the dollar price of a 1,000-yen note instead of a single yen. As you have already seen, a price of 8 dollars per 1,000 yen is the same as 125 yen per dollar. Once you enter a value in a white field, the graph and any corresponding amounts in each grey field will change accordingly.) 20 18 16 14 B 10 2 6 8 EXCHANGE RATE (Dollars per 1,000 yen) o 0 4 PRICE OF YEN (Dollars per 1,000 yen) -8 -6 -4 16 14 12 Suppose that the price of yen is $4 per 1,000 yen. Net exports from Japan will be 10 Suppose that the price of yen is $6 per 1,000 yen. Net exports from Japan will be 8 6 4 2 Exports from U.S. 10 Exports from Japan 10 12 14 16 YEN (Trillion) -2 0 Based on the data from the previous two parts of this problem, use the blue line (circle symbol) to plot net exports for Japan as a function of the price of yen on the following graph. (Note: Select and drag the curve from the palette to the desired position on the graph.) 18 20 2 4 6 YEN (Trillion) 8 Graph Input Tool 10 Price (Dollars per 1,000 yen) 12 14 Exports from Japan (Trillion yen) 16 NX from Japan (Trillion yen) $2 NX from Japan 18 16 trillion yen. trillion yen. Exports from U.S. (Trillion Yen) 2 The previous graph you constructed should show that net exports from Japan would be negative if the price of yen increased to a high enough level, such as an amount greater than $10 per 1,000 yen. If you convert this price into the form typically quoted in the newspaper, this price corresponds to yen per dollar.
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