Does the GRE test these often or at all?
Prepswift topics:
Graphing Absolute Value Equations,
Rotating 90°,
Even and Odd Functions,
Calculating Intersections.
Perhaps a change of perspective would help. It is better to know these concepts rather than pray and spot what will come out.
But just to answer your question, I have seen / heard students say it has came out before but definitely less so than arithmetic / algebra. Hope this helps 
That helps. Thanks Clare!