Write an equation that express the statement (use k as the constant of proportionality)
X is proportional to s and inversely proportional to t.
X = k(s / t)
To express the statement "X is proportional to s and inversely proportional to t" using the constant of proportionality k, we can write the equation as:
X = k * (s / t)
In this equation, k represents the constant of proportionality, s represents the variable that X is directly proportional to, and t represents the variable that X is inversely proportional to.