Poor explanation of lowest time

#1

I watched the last part twice but unable to understand the lowest point in a graph. Please explain.

#2

hello @govilayush
pls mention the time stamp

#3

I hope I’ve cleared your doubt. I ask you to please rate your experience here
Your feedback is very important. It helps us improve our platform and hence provide you
the learning experience you deserve.

On the off chance, you still have some questions or not find the answers satisfactory, you may reopen
the doubt.