Graph the line that represents a proportional relationship between $y$ and $x$ where the *unit rate* of change of $y$ with respect to $x$ is $\,\dfrac{4}{5}$ . In other words, a change of $1$ unit in $x$ corresponds to a change of $\,\dfrac{4}{5}$ units in $y$. **Graph the line and write the equation of the line.**[[☃ interactive-graph 1]] The equation is [[☃ expression 1]] .