Question 1150568
Two separate problems, not linked - no relationship


The puppy:
( age in weeks,  weight in pounds )
(x,y)
points are  (6,13) and (15,31).


Starting an equation in the point-slope form:

{{{y-13=((31-13)/(15-6))(x-6)}}}-----------you can simplify this and put into whatever form you want.