How to use “Suggesting” in Google Slides

I found this online LaTeX editor. It allows you to type LaTeX and download an image of the resulting equation. It even shows in real time what the equation looks like.

I'm going to use the online LaTeX equation editor to place an equation in Google Presentations, just like you wanted to.

Here's an example:

It's a kind of REST interface that generates a downloadable .png image like this, similar to Google Chart API.

This is currently not a Google Docs feature (and not possible) based on online documentation and no better answer. Apparently, this worked at one point in Google Docs, but it required viewers to use Google Talk (and this combination was buggy at the time).

An alternative I went with is PowerPoint 2010, which comes with a feature to broadcast slideshows to users over the Internet.