Relations symbol
\varproptoThe \varpropto symbol is used to denote proportionality between two quantities. It indicates that one quantity is proportional to another, meaning that they change at the same rate or ratio.
y is proportional to x, meaning y = kx for some constant k.
y \varpropto xForce F is proportional to mass m, implying F = km for some constant k.
F \varpropto mArea A is proportional to the square of the radius r, indicating A = kr^2 for some constant k.
A \varpropto r^2