Here is the graph of this relationship.

Graph of a lin, x y plane, origin O. Horizontal and vertical axis scale 0 to 10 by 1’s. Line starts at (0 comma 0), rises to point (1 comma the fraction 5 over 4), rises to point (4 comma 5), rises to point (5 comma the fraction 25 over 4), then rises to point (8 comma 10) and keeps rising.

If $y$ represents the distance in feet that a snail crawls in $x$ minutes, then the point $(4, 5)$ tells us that the snail can crawl 5 feet in 4 minutes.

If $y$ represents the cups of yogurt and $x$ represents the teaspoons of cinnamon in a recipe for fruit dip, then the point $(4, 5)$ tells us that you can mix 4 teaspoons of cinnamon with 5 cups of yogurt to make this fruit dip.

We can find the constant of proportionality by looking at the graph: $\frac54$ is the $y$-coordinate of the point on the graph where the $x$-coordinate is 1. This could mean the snail is traveling $\frac54$ feet per minute or that the recipe calls for $1\frac14$ cups of yogurt for every teaspoon of cinnamon.

In general, when $y$ is proportional to $x$, the corresponding constant of proportionality is the $y$-value when $x=1$.