Given:
The equation of the line of best fit is :

To find:
The x-intercept and check whether it make sense in this context.
Solution:
We have,

Substitute
to find the x-intercept of the given best fit line.




So, the x-intercept is at point (-10.7986359202,0). It means the score on final examination is 0 if -10.7986359202 hours spent on studying.
But is does not make sense because the number of hours cannot be negative.