Question 974364
Your linear relationship uses points in a form,  (p,h).


Paperpack prices were 8 dollars; and hardcover prices were 27 dollars, EACH.


A reader's cost would be  {{{8p+27h}}}.  Wanting the spend 110 dollars, this makes  {{{8p+27h=110}}}.  Easy plotting using the intercepts can be, find p when h is zero; and find h when p is zero.



{{{graph(300,300,-1,18,-1,18,-(8/27)x+110/27)}}}