I think I have the answer let me just double check my work okay!
Step-by-step explanation:
the given data is in ascending order=9,-1,-2,-2000,-6000
rang = 9-(-6000)
( from above photo it continue )
The answer is 27.625 !
hope this helpss !!

Compare to standard equation of SHM

Here


Well the above one are for extra knowledge .
Solution:-







So.

The distance between -4.5 and 3.5 is 8