Question

Could someone define direct variations for me?

Answer 1

a change or difference in condition, amount, or level, typically with certain limits.
a different or distinct form or version of something.

Answer 2

Here is an excellent video on that topic:
https://www.khanacademy.org/math/algebra-basics/core-algebra-linear-equations-inequalities/core-algebra-direct_inverse_variation/v/direct-variation-application
Hope this helps =)