The following graph shows the demand curve for uff, a useful commodity produced on the planet Hermes. The Hermetian currency is the yen. The graph input tool also shows how demand for uff is affected by changes in the average income of Hermetians, as well as the prices of tulg and snick, two other related goods available on the planet.   Suppose that the price of a gram of uff decreased from 50 yen to 45 yen. This would cause a movement along the demand curve and therefore an increase in the quantity of uff demanded. Plug any value lower than the current number into the Average Income box. A decrease in average income causes a leftward shift of the demand curve.   When the prices of tulg or snick change, there is a shift of the demand curve for uff. The directions of these changes imply that snick and uff are __________ (options: substitutes, normally consumed together), and that tulg and uff are _______ (substitutes, normally consumed together). For example, a Hermetian might say, “I went to eat my uff this morning, but there wasn't any ______ (options: snick, tulg) in my fridge. So instead of having uff for breakfast, I ate some ________ (options: tulg, snick).

ENGR.ECONOMIC ANALYSIS
14th Edition
ISBN:9780190931919
Author:NEWNAN
Publisher:NEWNAN
Chapter1: Making Economics Decisions
Section: Chapter Questions
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The following graph shows the demand curve for uff, a useful commodity produced on the planet Hermes. The Hermetian currency is the yen. The graph input tool also shows how demand for uff is affected by changes in the average income of Hermetians, as well as the prices of tulg and snick, two other related goods available on the planet.
 
Suppose that the price of a gram of uff decreased from 50 yen to 45 yen. This would cause a movement along the demand curve and therefore an increase in the quantity of uff demanded. Plug any value lower than the current number into the Average Income box. A decrease in average income causes a leftward shift of the demand curve.
 
When the prices of tulg or snick change, there is a shift of the demand curve for uff. The directions of these changes imply that snick and uff are __________ (options: substitutes, normally consumed together), and that tulg and uff are _______ (substitutes, normally consumed together). For example, a Hermetian might say, “I went to eat my uff this morning, but there wasn't any ______ (options: snick, tulg) in my fridge. So instead of having uff for breakfast, I ate some ________ (options: tulg, snick). 
 
Graph Input Tool
Demand for Uff
100
90
I Price of Uff
(Yen per gram)
50
80
Quantity
Demanded
100
70
60
DEMAND SHIFTERS
50
40
Average Income
(Yen per month)
100
30
Demand
Price of Tulg
(Yen per gram)
20
20
Price of Snick
(Yen per gram)
10
50
20
40
60
80 100 120 140 160 180 200
QUANTITY (grams of uff per month)
PRICE (Yen per gram)
Transcribed Image Text:Graph Input Tool Demand for Uff 100 90 I Price of Uff (Yen per gram) 50 80 Quantity Demanded 100 70 60 DEMAND SHIFTERS 50 40 Average Income (Yen per month) 100 30 Demand Price of Tulg (Yen per gram) 20 20 Price of Snick (Yen per gram) 10 50 20 40 60 80 100 120 140 160 180 200 QUANTITY (grams of uff per month) PRICE (Yen per gram)
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