set up problems involving direct or inverse proportion and relate algebraic solutions to graphical representation of the equations

To include only the following:

\(y ∝ x, y ∝ \dfrac{1}{x}\)

\(y ∝ x^2, y ∝ \dfrac{1}{x^2}\)

\(y ∝ x^3, y ∝ \dfrac{1}{x^3}\)

\(y ∝ \sqrt{x}, y ∝ \dfrac{1}{\sqrt{x}}\)