The intercept of a graph is the point where the graph crosses the axes of the graph.
The interpretation of the c-intercept is: <em>in 1996, the global wind power capacity was approximately 7 gigawatts.</em>
On the graph (see attachment), we have the following observations
- The vertical axis represents the global wind power capacity (i.e. the c-axis)
- The horizontal axis represents the years since 1996 (i.e. the t-axis)
So, the c-intercept is the point that crosses the vertical axis.
From the graph, the curve crosses the c-axis at c = 7, and t = 0 (i.e. years = 1996)
Hence, the interpretation of the c-intercept is: <em>in 1996, the global wind power capacity was approximately 7 gigawatts.</em>
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