How do I know if an image I created in illustrator i vector or raster?

I need a strictly vector picture for a project. How can I ensure that everything in the image is vector? Does using any filters make it raster?How do I know if an image I created in illustrator i vector or raster?
Some of your filters may be raster effects on a vector image; you do have to be careful with them because you can sometimes get some odd problems when you print (even a pure vector image is actually rasterized for printing: professional digital printers use what is called a RIP: Raster Image Processor). So I would avoid using much in the way of filters, especially any of the Photoshop type filters.





But other than that, anything you do in Illustrator is by default a vector, since Illustrator is a vector drawing program.How do I know if an image I created in illustrator i vector or raster?
vector is lines using math, raster is pixels like a photograph. It very easy to tell the difference, if you select all when everything is unlocked anything that is vector will highlight blue usually. if its rasterized then it will only highlight the box around it.
Anything you create in Illustrator is vector unless you convert it to raster or save it in a raster format. Some filters will change it to raster, but they will warn you before hand.