For this case we have the following expression:
\(xy = k\)
To find the constant k, what we must do is replace the following values in the given equation:
\(x = 7
y = 3\)
Substituting values we have:
\(k = (7) (3)
k = 21\)
Answer:
the constant of variation, k, is:
\(k = 21\)
