The table below shows the amount of flour and eggs you need for making different-sized batches of cookies. | Cups of flour | Number of eggs | - | :-: | :-: | Batch A | $3$ | $2$ Batch B | $9$ | $6$ Batch C | $12$ | $8$ **Write an equation to describe the relationship between cups of flour $(f)$ and eggs $(e)$.** [[☃ expression 1]]