a recipe says to use 5 cups of sugar to make 40 cookies. what is the constant of proportionality tat relates the number of cookies made,y, to the number of cups of flower used,x?

Question

Vocaloid · Answer

Politely disagree with the previous response. A directly proportional relationship takes the form y = kx (there is no + or - term) where k is the constant of proportionality and x and y are your independent/dependent variables. in this case, cookies made is y and cups of sugar is x, so you would simply plug in y = 40 cookies and x = 5 cups of sugar and solve for the constant, k.