Authors libby rittenberg 67
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cost of producing an additional snowboard at Plant 1. This opportunity
cost equals the absolute value of the slope of the production possibilities
curve.
Figure 2.3 The Slope of a Production Possibilities Curve
The slope of the linear production possibilities curve in Figure 2.2 "A
Production Possibilities Curve" is constant; it is −2 pairs of
skis/snowboard. In the section of the curve shown here, the slope can
be calculated between points B and B′. Expanding snowboard
production to 51 snowboards per month from 50 snowboards per
month requires a reduction in ski production to 98 pairs of skis per
month from 100 pairs. The slope equals −2 pairs of skis/snowboard
(that is, it must give up two pairs of skis to free up the resources
necessary to produce one additional snowboard). To shift from B′ to
B″, Alpine Sports must give up two more pairs of skis per snowboard.
The absolute value of the slope of a production possibilities curve
measures the opportunity cost of an additional unit of the good on the
horizontal axis measured in terms of the quantity of the good on the
vertical axis that must be forgone.
Attributed to Libby Rittenberg and Timothy Tregarthen
Saylor URL: />
Saylor.org
67
