A cookie company uses one cup of sugar for every 20 cookies it makes. Let S represent the total number of cups of sugar used, and let N represent the number of cookies made. Write an equation relating S to N, and then graph your equation using the axes below.

Well it says 1 cup of sugar (S) for every 20 cookis (N) is like saying the amount of cookies (N) is increased by a factor of 20 times the cups of sugar (S) used. which can be written:

cookies (N) = 20 * cups sugar (S)

So you just get rid of the words and use the variables S and N and get

N = 20S

that is the equation. to graph it just plug in a few numbers for s and get the n. It's just like x and y but where x is S and y is N