Lines And Slopes Worksheets With Answers - Hec Montreal Page 4
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9‐intercept :
since 60$, 1200 is a point on the demand curve, it must satisfy the following
20
equation :
. By substitution, we obtain
1200
20 60
1200
1200
2400
20 and
2400, the equation of the demand line is
As a result, since
20
2400
It is interesting to note that once this line is found, we can evaluate what the
demand is whatever the price. For example, the demand when the price is at $40
would be obtained by calculating the variable :
20 40
2400
800
2400
1600
We could also obtain the price needed for a demand of 1000 tickets.
1000
20
2400
20
2400
1000
20
1400
70 $
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