Question

The total energy used in a country in 1991 was 7518 ktoe. This increased to 17895 ktoe in 2001. If this trend can be assumed to be linear over the time period, calculate the slope of the line that describes the trend in units of ktoe/year.

Answer 1

The slope of the line that describes the trend in energy consumption is 1037.7 ktoe/year.

Step-by-step explanation:

To calculate the slope of the line that describes the trend in energy consumption, we can use the formula:

Slope = (Change in Y) / (Change in X)

In this case, the change in Y is the difference in energy consumption between 2001 and 1991, which is 17895 ktoe - 7518 ktoe = 10377 ktoe. The change in X is the difference in years, which is 2001 - 1991 = 10 years. Therefore, the slope is:

Slope = 10377 ktoe / 10 years = 1037.7 ktoe/year