Table of Contents
Directly proportional: when one amount increases, another amount increases at the same rate.
The symbol for “directly proportional” is ∝
Inversely Proportional: when one value increases, at the same rate that the other decreases.
|Directly Proportional||Inversely Proportional|
|Have more workers||You pay more||Work time is shorter|
How many spending ∝ workers
Constant of Proportionality
Constant of proportionality is the value that relates two amounts.
|can be written as||note|
|spending = 10 x workers||y = kx||where k is Constant of Proportionality|
|Work time = 10 / workers||y = k/x||where k is Constant of Proportionality|