I have a function which depends on a single variable x and a variable l.

I plot these functions for different integer variables of l like so:

`plot!(fig, x->f(x, l=3))`

so in general:

`plot!(fig, x->f(x, l=i))`

However for each f(x,i), there is a specific point on the curve that I want to label depending only on x-values that i have, ideally like this (the following is pseudocode):

`plot!(fig, x->f(x, l=3), label(f(some_number), red, sploosh, 5pt))`

Is this possible or do I really need to create a separate dataframe, calculate the x- and y values and overlay the plot with a scatter based on those values?