I'm working on a Mac (OS X 10.10.5) in the Wolfram Desktop (11.0.1.0).

I'm using code like the snippet below to draw a plot of a function.

pic = Plot[(.25 x)^3 + (-.4 x)^2 - 2, {x, -10, 10}, AspectRatio -> 1, ImageSize -> {{480}, {540}}];

The function rule is determined at runtime. In addition to the curve of the function, I would like the plot to show a point or two with labels like "A".That's what I'm having trouble figuring out. I found an example in the docs for placing labels in a Plot[], but not for placing points. For instance, in the plot drawn by the code above, I might want to place a point at the y-intercept or at some other place along the function's curve.

Thanks in advance,

Mark Greenberg