Answer:
Hi! If y varies directly as x, then k=y/x. If this is the case then, as y increases, x should increase also by the same factor.
Step-by-step explanation:
1. y varies directly as x: k=y/x or y=x*k; K is the constant or the factor that dictates the increase or decrease of y or x.
Hopefully that makes since! There is a good article on SparkNotes that explains this concept better I think.