I don't really understand this question do u have a pic
Answer: y-8=-1(x+3)
the formula for pain-slope form is:

(where

=a known y coordinate &

=a known x coordinate.
Now just plug in the data...
y-8=-1(x--3)
y-8=-1(x+3)
4.20/12 = 0.35$
6.19/16.3= 0.38$
8.40/28 = 0.30$
21.12/64 = 0.33$
Answer:
The best deal is the 28oz container of peanut butter.