To find the weight of a cheetah that runs 7 miles using the given line of best fit equation \( y = 195 - 7.3x \), we can substitute \( x = 7 \) into the equation:
\[ y = 195 - 7.3(7) \] \[ y = 195 - 51.1 \] \[ y = 143.9 \]
The calculated weight of the cheetah that runs 7 miles is 143.9 pounds.
Now, we need to determine whether this situation involves extrapolation or interpolation. Interpolation means predicting a value within the range of the data provided, while extrapolation involves predicting a value outside of that range. The given data covers miles run from 1 to 10, so since 7 miles falls within this range, we are using interpolation.
Thus, the answer is:
143.9 pounds and interpolation.