Undoing a whole row

I am a fairly new knitter- and am making a scarf, K,P,K,P pattern. I think I did the last two rows wrong- is there a way to undo them? I sure hope so! I’d appreciate any easy explanation of how.
Thank You-
Casey

http://www.knitty.com/ISSUEwinter03/FEATwin03TT.html

You can take them out. :wink:

OY! I’ve been looking for this!! Thanks Ingrid :cheering:

:thumbsup: