Question 1203521
.


Looking at this problem, I do not understand for which reason @Theo made his calculations, at all.


The problem does not assume making any calculations.


It assumes making a plot, only, which is NOT a Math problem, at all.



Simply the visitor wants that the tutors make his job - plotting this figure for him,  for free.

He does not want anything else.

Simply a capital slacker,  and  @Theo helps him, working instead of him - nothing else.



Such posts should be destroyed as irrelevant to the goals of this forum, 
and their senders subjected to a legal fine.