noun, noun or participle which takes 'suru', intransitive verb
direct proportion; direct ratio
Mathematical term for a relationship where one quantity increases or decreases in constant ratio to another. Often used with する to mean 'be directly proportional'.
このグラフでは、xとyが正比例している。
In this graph, x and y are directly proportional.
売上は広告費に正比
Sales increased in direct proportion to advertising expenses.